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Posted on
06
Aug 2020

Probability GMAT Problem

Probability GMAT Problems can be super complex if you don’t frame it correctly. One of the keys to looking at probability problems, particularly conditional probability and independent probability problems, is breaking each part up into its own entity, and a lot of times this clarifies the problem.

Introduction To The XYZ Probability Problem

Let’s take a look at this ‘XYZ’ probability problem. Xavier, Yvonne, and Zelda are solving problems. We’re given the 3 probabilities for correct answers and we’re being asked what’s the probability of X being right and solving it, Y solving it, and Z not solving it.

The first thing we can look at is, say: “Well what’s the probability of Zelda not solving it?” And it’s just going to be the flip, the other side of 5/8 to bring us up to 1. If she solves it 5 out of 8 times, she’s not going to solve it the other 3 out of 8 times. So, we’re dealing with 1/4, 1/2, and 3/8.

Doing The Math May Seem Simple

The math here is straightforward, multiply them together. But that might not be readily apparent, or at the very least, just plugging it into that formula can get you into trouble. So, here’s where owning it conceptually and mapping it out with a visualization helps you take command of this problem. 

Xavier Getting It Correct

Since each probability is independent of the others we can look at them independently. What’s the probability of Xavier getting this correct? 1 out of 4 times. So, we can say in general, for every four attempts, he gets it correct once or 25%. If, and only if Xavier gets it correct can we move on to the next part – Yvonne.

Yvonne Getting It Correct

Xavier gets a correct 1 out 4 times then what are the chances that Yvonne gets a correct? 1 out of 2. So to have Xavier get it correct and then Yvonne get it correct it’s going to be 1 out of 8 times – 1/4 times 1/2.

It’s not that we can’t look at a Yvonne when Xavier gets it incorrect, it’s that it doesn’t matter. From a framing perspective, this is all about only looking at the probability for the outcome that we want and ignoring the rest.

Zelda Getting It Incorrect

Xavier: 1 out of 4, Yvonne: 1 out of 2, gets us to 1 out of 8. Then and only then, what are the chances that Zelda gets it incorrect? 1 out of 8 trials brings us to X and Y are correct, then we multiply it by the 3/8 that Zelda gets it incorrect. That gets us to 3/64. 3 out of every 64 attempts will end in ‘correct’, ‘correct’, ‘incorrect’.

This is one of those problems that may have to go through a few times but once you attach the explanation to it, you can’t mess up the math.

If you enjoyed this GMAT probability problem, try your hand at these other types of challenging problems: Combinatorics & Algebra

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one one one gmat tutoring- why this prep option is the best
Posted on
04
Aug 2020

One on one GMAT Tutoring: Your Way to GMAT Success

by Apex GMAT

Contributor: Ilia Dobrev

June 30, 2020

When it comes to GMAT tutoring, we at Apex have learned that there are a set of core characteristics that all successful GMAT test takers embody; no matter their industry, degree, personal traits or prior levels of knowledge. In this article, we’ll:

  • explore each of these eight core characteristics
  • deconstruct a few of the faulty assumptions that test takers bring to the process
  • distinguish one-on-one GMAT tutoring as an efficient way for most people to achieve a competitive GMAT score and build a solid foundation for an MBA program.

Many people preparing for the GMAT believe that it’s the instructor’s responsibility to implement their own expertise and style to improve one’s current skill level and address one’s weaknesses. The reality, however, is more of a two way street, where the important element is the compatibility between a tutor’s teaching style and a student’s learning style. A qualified instructor is one that first examines the way a client processes new information and perceives problems, and the techniques he or she uses to address those problems. Only after a tutor has understood one’s learning style can he/she match professional guidance with the needs of the client.

8 ways one-on-one GMAT tutoring gets you to a 700+ score on the GMAT

1. Creating a productive & efficient learning structure

Oftentimes, test takers seek GMAT tutoring because they have stumbled upon enough types of challenging problems that they can’t tackle alone, or they’ve reached the peak of their self-preparation but still seek higher results. One-on-one tutoring differs from self-prep and group work with a tutor in terms of learning environment and having the benefit of an external perception of your performance. With private GMAT tutoring, communication dynamics are on a much more personal, and personalized, level – yielding stronger results much more quickly than alternative solutions.

The privacy and trust inherent in a one on one GMAT tutoring setup permits test takers to feel comfortable sharing their weaknesses in a safe environment and tackle those things that are challenging to them without worrying about how it will be interpreted by peers. The comfort afforded by this situation should not be underestimated. A private GMAT tutor not only helps with improving one’s technique and self-knowledge, but also strives to create a healthy and secure learning environment that is vital for:

  • reducing test anxiety
  • building GMAT confidence
  • improving studying habits
  • avoiding distractions and disruptions of the learning process
  • encouraging freedom to ask questions
  • nurturing motivation

2. Constant two-way feedback

A fundamental rule of management states, “No feedback is bad feedback”. Another is “What gets measured gets managed.” When preparing alone or within a group, a future test taker will not have a clear indication about how effective they are performing until they take a practice exam, and even then the exam only focuses on specific metrics. A good private GMAT tutor will know what to look for, what to measure, and what feedback to give to provide rapid and lasting results. They will guide you through questions that are matched to your current level of skill, meaning that you will be consistently receiving feedback on your methodology, time allocation, implementation of knowledge, and solution paths as you progress through your GMAT preparation. This ongoing back and forth communication will allow you to identify your weak spots in self-prep as well, and revisit appropriate material to deepen your understanding of less comfortable concepts.

3. Learning at your own pace, and then speeding it up

Timing is the most crucial aspect of the GMAT that you need to master to achieve a great score. Naturally, everyone excels at tackling some problems and needs more time to solve others. Tutoring can hone your timing decisions and your tutor can create a customized plan for timing allocation across a range of problems depending upon your relative strengths and weaknesses.

Studying with a private GMAT tutor will also allow you to spend the right amount of time on each aspect of the exam according to your scoring needs. This lets you avoid inefficiencies and master only those techniques that will be most useful to you in order to fulfil your potential.

4. Developing specific skill sets to tackle each section of the GMAT

The GMAT test is a complex exam designed not to test high school knowledge, but rather core character traits like adaptability, time management, critical thinking, logical reasoning, and multitasking. You cannot achieve a high GMAT score if there is a significant difference between your performance in each section of the exam. A private GMAT tutor can give you the best insights on how to build, manage, and combine the different skills needed to get a great end-result and achieve parity between your verbal and quantitative scores.

5. Realizing better use of your time

Flexibility and accessibility of learning is key to maximizing your potential. One-on-one GMAT tutoring is:

  • Usually offered online. This means that you can schedule sessions at the most convenient time depending only on your flexibility. You can have lessons in your breaks from work, gaps between classes, during daily commutes, during holidays, in the park, etc.
  • Available at any time. This is not the case with group GMAT tutoring as classes are scheduled depending on the instructor. Apex works globally, and has tutoring available in every time zone around the globe. Private GMAT tutoring should be designed to meet your lifestyle requirements and you should aim to schedule sessions when you are most productive. A technique that the best GMAT instructors adopt is to schedule sessions at a time of the day when you are supposed to sit your actual exam. This can help you simulate conditions similar to those on test day and give you important insights on how to maximize your productivity at that specific time frame.
  • Offered with different options depending on duration and material covered in the program. Whether you are a beginner or someone who already has a strong understanding of the GMAT, you can choose a specifically designed GMAT curriculum depending on what you strive to achieve. This is reflected in the amount of hours you are going to spend with an instructor and in the price of the service. At Apex we offer a complimentary first call to help you determine what course of action will be the most suitable for you depending on your current level of preparation and your GMAT aspirations.

6. Understanding where you excel and what you struggle with most

If you are aiming for an elite GMAT score, you’ll need to leverage your strengths and recognize your weaknesses. Understanding the meaning behind each question, its structure and underlying testing purpose, and the methodologies the test writers use to construct the problems is essential for success. The best one-on-one GMAT tutors are aware of the subtleties of the exam and can not only guide you around them, but teach you how to leverage these subtleties for high level insights into the hardest 750+ problems. This will predispose you to uncovering features of the test that most preppers have never even considered.

7. Utilizing learning aids

Finding and gaining access to challenging GMAT problems, authentic and reliable practice tests / mock exams, and appropriate study tools can take ages to hunt down (and cost a fortune). One-on-one GMAT tutoring allows you to refocus your valuable time as experienced instructors will already have compiled a solid database of resources and questions and show you the ones that are most relevant to your success at your current level. That way, your instructor, and not you, will spend the time filtering them according to your needs and present the ones that will have the greatest positive impact on your GMAT preparation.

8. The expertise and professional mentorship of a private GMAT tutor

Working with an expert GMAT tutor who has scored well into the top 1%, and who knows the exam inside and out will help you accelerate your learning and move the needle of your progress in ways you only read about on GMAT blogs. Experienced instructors are trained to teach you how to overcome the different GMAT scoring plateaus and meet your personal target. The goal of great tutors is not only to show you how to answer a question correctly, but also to help you extract a methodology that can be continuously applied to other questions across the GMAT, and to problems beyond.

Apex’s tutors focus on teaching the higher order strategies that are necessary for the achievement of a 700+ score and bringing out your optimal performance. Enlisting the help of a one-on-one GMAT instructor is recommended for those who are short on time or those who already have a solid understanding of the exam and are scoring well (low to mid-600’s), but are looking to gain those extra points that will make them get into their dream MBA program and lay the groundwork for a challenging, engaging, and lucrative career.

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Posted on
16
Jul 2020

When To Study For The GMAT?

If you are reading this at any time other than the morning, you’re probably not getting your optimal yield out of your self-prep time. Let’s talk about how the time that you spend preparing and the relative yield you get from that time can change. 

Time of Day

Most of us have good times and bad times of the day, and that’s tied in very deeply to our biology and our circadian rhythm. Most people are at their sharpest mid-morning. However, if you’re constantly sleep-deprived this might change. In fact, it might never be optimal. 

In order to get the best out of your self-prep time, you need to be capitalizing on the best times of the day to study. This also means to not overdo it. Don’t force yourself into studying when you’re not up for it. If you’ve worked a 10-hour day, whether on a desk, on the street, or doing big projects and traveling to a client as a consultant, your study time is very limited and studying when you’re exhausted is not only going to be low-yield but it’s also going to take a lot out of you so that you’re not able to capture those high-yield times.

Small Increments of Study Time

Instead, try self-prepping in smaller units throughout the day. Particularly in those times when your sharpest. If you can grab 15 minutes at 10 o’clock in the morning, even if it’s a bathroom break or 20 minutes on your commute, do so. Those are really good times to prep. Doing little increments throughout the day increases your contact density but also decreases the burden from your daily schedule. 

Many of you out are working crazy jobs, balancing a social life, family obligations, and the GMAT can take over. Particularly if you’re spending 10, 20, 30 hours a week self-prepping. If you are, you’re spending too much time. You’re better off getting stronger results out of smaller increments of high-yield time rather than killing yourself and studying 3-6 hours at a time on the weekends or in the evenings. 

Quality Over Quantity

When you prepare and how you prepare is much more important than how much time you prepare. Be mindful of when you’re sharpest during the day and to take at least a portion of that time and devote it to your GMAT prep, because what you’re ultimately doing is personal development. 

As much as you might be devoted to a job, it’s not going to be there forever. Your personal growth, a high GMAT score, and also getting into the next step of your career or the next step of your education. That should be your priority and you need to make sure you balance that with your other obligations. 

When To Study For The GMAT?

So remember: incremental short study breaks, or in other words, breaks from everything else you’re doing to study, increasing your contact density. If you’re tired, and this is probably the biggest takeaway, don’t force yourself to study because you’re just spinning your wheels. You are not going to get a good yield out of it. You’re better off putting on Netflix, taking a nap, spending time with loved ones, going out with friends, and getting yourself on an even keel. So that the 60 to 90 minutes a day that you can devote to GMAT is the best 60 and 90 minutes you can give it. Try to get some rest cause I know 90% of you are reading this while tired. Best of luck on your GMAT Prep Journey! 

Did you enjoyed When To Study For The GMAT? Watch some of our other videos including: How to select a GMAT tutor.

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How can private tutoring
Posted on
14
Jul 2020

How Can Private Tutoring Help You Score 700+ on the GMAT?

By APEX GMAT

Contributor: Irena Georgieva

14 Jul 2020

Achieving a 700+ score on the GMAT is not a simple task – it requires significant preparation, excellent organization, and continuous motivation to learn. Studying for an exam can be overwhelming, especially when there is no one by your side to keep you motivated. Perhaps you’re struggling with quant problems or you’re not sure how to apply the strategies that you have learned. Well, don’t worry… This is where private GMAT tutoring comes into play.

Here are the top 5 reasons you should start working with a tutor in order to ace the GMAT.

       Index:

1.     Individualized Learning Experience

Although the GMAT is a standardized exam, there is no one size fits all approach to success. While some students favor graphical solution paths, others are more analytical or methodical in their approach to answering GMAT questions. Some struggle with geometry, others with algebra, yet others with critical reasoning. There are learners who have excellent writing skills, while others, particularly ESL students, require practice to achieve a good score on the analytical writing assessment. The existence of these differences indicates that there is not only a singular path to studying for such a nuanced exam and that preparation should be customized to maximize one’s strengths and abilities.

Unlike classroom teaching where the teacher rarely deviates from the prescribed syllabus, a competent private tutor will tailor your learning plan based on the knowledge and skills you currently possess and their expertise. By identifying your learning style and framing your entire prep program around it, a skilled GMAT tutor will ensure that you are not only progressing through your prep but enjoying it as well.

What’s more, a perceptive private GMAT tutor will also focus your attention on the areas where you experience difficulties or need improvement, especially those areas that you can’t see for yourself. Due to this guidance and direction, you will be able to spend more time on improving, and less time repeating the same mistakes or going over content that you’ve already mastered. You’ll develop new skills that were previously lacking and adopt more favorable methods to solve difficult problems. Additionally, you will learn how to organize your time more effectively which is essential for you on the exam.

2.     Personalized Attention

Although classroom teaching can prove beneficial for mastering the fundamental knowledge needed for higher level approaches, one disadvantage of learning with others is the lack of personalized attention and focus on the lowest common denominator type construal of the concepts being taught. Teachers in any classroom cannot pay attention to all of their students’ needs, especially those who struggle differently than most, or who have higher goals than their classmates. While one student might be struggling with the clustering principle that defines standard deviation as it applies to comparing different sets, another might require a refresh on calculating variance and how the underlying concept operates. Whatever your specific case may be, the help of a private tutor can address it.

By working with a top-notch tutor outside of the classroom, you’ll be able to rapidly progress and draw on personalized mental models to confidently approach GMAT problems of the highest complexity. A skilled GMAT tutor will not only help you acquire new knowledge but s/he is also going to teach you valuable meta-strategies that can be useful for you when you study for the exam. At Apex we focus on solution paths, problem forming, and many other innovative techniques that make for high-yield self preparation, and top level scores.

Moreover, a highly qualified private tutor will have a team behind him/her and copious amounts of materials and drills, while drawing upon a flexible curriculum so that your preparation can be as personalized and efficient as possible and result in the score you are striving to achieve. You shouldn’t be afraid to speak openly with your GMAT tutor about any concerns you have regarding your preparation, and your tutor should always be open to your feedback and input, rather than trying to “run the show”. Recall that the purpose of engaging a tutor is not only the acquisition of knowledge but also the attention and support you will be given.

3.     Improved Confidence

Working with a proficient private tutor will definitely boost your confidence, and confidence is essential to exemplary GMAT performance. After a few sessions, you should expect to see how much your tutor has helped you learn and adopt fresh skills and additional perspective – about the GMAT and about yourself as a test taker  – and address the problems you thought impossible just a few short weeks prior. Almost imperceptibly you will become more proficient in your execution and more sensitive to the different ways the GMAT modulates complexity and delivers hints about the most viable and efficient solution paths (here at Apex we call these “Test Reads”). Thorough preparation will marginalize your fear of failure and help you combat latent (or not so latent) test anxiety so that you can manifest the high expectations that you’ve likely set at the outset of this process.

In addition, a capable private tutor will ensure that you address your anxiety about the exam in a healthy way. Aside from designing a study plan customized to your learning style, your GMAT tutor will focus on other salient, but less popular factors that affect GMAT performance; the amount of sleep you get, and overstudying, to name just two. While you might not have considered these factors, or believe them to be unimportant, they drastically influence productivity and affect test day performance. That is why an experienced GMAT tutor will do everything s/he can to make you ready, and make you feel ready, for your exam.

4.     Greater Motivation

Constant preparation can be exhausting and without the proper support and encouragement, it’s normal to lose your motivation along the way. A tutor, however, can provide that motivation and understanding of what you’re going through – something well meaning friends and family cannot – so that your goals become reality.

Apart from ensuring your efficient preparation for the GMAT, a personal GMAT tutor will also be your greatest mentor, motivator, and cheerleader. S/he will be the person who will check in, see how you’re doing midweek, and encourage you the most because he/she will be personally invested in you and will have a professional stake in the outcome of your preparation. The best tutors take their clients’ successes personally, and this informs their attentiveness and personal pride. The faith that your tutor has in you should inspire you so that you can achieve your dream score and satisfy your collective expectations. Thus, you will be even more motivated than before and you will perceive the exam as an opportunity to demonstrate all the novel skills you have developed and trained throughout your preparation.

5.     Higher GMAT Score

Last, but certainly not least, preparation with the help of a private tutor will result in a higher score on test day when compared to classroom learning or self-preparation alone or in combination. As we have already mentioned, lessons from a devoted private tutor will provide you with an individualized learning experience and more personalized attention which will lead to an increase in your confidence and motivation for the exam. Finally, you will learn more than just GMAT strategies from your tutor. You will learn critical and creative thinking skills, heuristics, mental models, and other thinking tools that will help you make the most of all future learning opportunities. The best tutors, like the ones here at Apex, teach you how to better learn, and become mentors and trusted advisors as you progress through your MBA and further career.

Final Notes 

To sum things up: private GMAT tutoring can be expensive but the value it will deliver will be more than worth the money. The best tutoring stays with you and will add color and perspective to your future learning, whether in your MBA, on the job, or as you progress through your career. If you want to embark on your GMAT journey with a private tutor, make sure you:

  • speak to several instructors at first. Apex offers a complimentary consultation call and you can schedule one HERE.
  • learn more about how to select a GMAT tutor.
  • hear the opinions of others who have already tried private GMAT tutoring HERE.

Thanks for reading this article and good luck with your GMAT preparation!

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GMAT test strategies
Posted on
09
Jul 2020

8 GMAT Test Strategies To Help Boost Your Score

by ApexGMAT

Contributor: Ivan Minchev

June 22st, 2020

More than 250,000 students take the GMAT every year as a requirement to get into the thousands of different MBA, EMBA, MFin, MAcct and Management PhD programs worldwide. However, due to the complexity of the exam as well as its adaptive difficulty only the top 12% of test-takers manage to score 700 or above. Here are 8 GMAT test strategies you can utilize to achieve a higher score on the exam, no matter where you currently are on your GMAT preparation journey.

1. Adopting the proper mindset

Perspective  is everything. It is very important to understand that even though getting in the top 10% of test-takers might seem like a spectacular achievement (and don’t get me wrong, it certainly is) setting your goals on a certain score tends to be counterproductive. Instead, focus on attaining specific skills, knowledge, and command, and the score will follow. Goals lead to expectations and fear of failure, and fear of failure in turn results in stress, which can greatly hinder performance.

2. Overcoming stress!

Stress and fear can greatly influence your results, but there are ways to manage these very normal responses to a high stakes situation. One of the ways to reduce stress and boost your confidence is by beginning your preparation process as early as possible – ideally 90-120 days before the exam. This provides enough time to fully grasp the complexities of the exam, and more importantly internalize a new set of skills to handle that complexity.

A test taker’s greatest enemy is test anxiety. Understand that anxiety happens to everyone. What sets top performers apart is how they handle that anxiety, and how they direct it back into their performance. Many people use a variety of relaxation techniques for dealing with test anxiety. The most common and easy to use method is to practice deep and controlled breathing in combination with visualization techniques. 

3. For exam day…

Are you a coffee drinker? Surprisingly, caffeine can really help your performance on test day. Caffeine is a powerful nootropic that will help keep your senses sharp and will also boost the oxygenated blood flow to your brain, subsequently enhancing your performance. For more info on how coffee affects your performance click here

Remember how we said that it’s important to begin your exam prep early? This “early bird” attitude can be applied in more ways than one. What this implies is that you must (not might, not should) prepare your GMAT Test Day Survival Kit on the previous day and not leave this for the last moment. Everyone has waited for the last minute to do something, and chances are everyone has left something crucial behind. With the GMAT being such an important exam such situations should be avoided as much as possible. Try having a mock exam day. Map out the whole test day and practice it as if it were real, including your trip to the testing center. This will help you normalize the process and alleviate anxiety on test day.

4. Value your time and manage it efficiently!

Since the GMAT is a timed exam one’s planning and strategic skills are put to the test as they have to come up with an efficient time management strategy.

Use mental math tools whenever possible and also try getting used to reading and analyzing charts, graphs and tables efficiently for the Integrated Reasoning section. 

Once you’re further along in your preparation and have mastered seeing multiple solution paths before engaging any of them, familiarize yourself with common problems, and built up test reading and perspective skills, then you can begin dedicating yourself to timed sets: working on a cluster of 10 consecutive questions for each section of the exam when on the clock. This helps you calibrate your timing decisions and more readily notice when they require adjustment.

Remember, just because the GMAT is a timed exam, this doesn’t mean we must learn under a time constraint. Like good cooking, good learning takes time. Give yourself sufficient time to learn, while also making sure the learning time is spent as productively as possible.

5. The Integrated Reasoning section

Dealing with 12 multi-part questions in 30 minutes means that you’re going to be overwhelmed with information, and you won’t have much time to spare. Sorting through large amounts of data and understanding it in a timely manner is key to getting through this section.

A good way to rapidly identify information needed to solve a problem is knowing what to look for. Read the problems carefully (and this applies to all sections) and proactively determine what you want out of the information or solution path. This way, you will sift out most unnecessary information in advance, saving plenty of time along the way. However, this does NOT mean to ignore the text written around the tables/graphs/charts.

6. The Analytical Writing section 

Failing to plan is planning to fail! Always plan your essay! Set aside 4-5 minutes to plan what you are going to write and how you are going to structure your essay. 

Create an essay template in advance! There are many ways you can go about making one but usually, the more you practice your essay writing skills the more used to a specific writing style you are going to get ultimately resulting in your own template.

7. Ask for help

There is nothing embarrassing about asking for help, especially when it comes to an exam that is so vital to one’s future. There are numerous GMAT forums and courses on the web, where you can ask and get help from people who have already taken it.

However, if you would prefer a more personal and individualized approach you could consider hiring a private tutor. The benefit of not preparing alone but hiring a tutor is that it allows for direct feedback on what are an individual’s strengths and what needs improvement, while also receiving advice on how to achieve those improvements. As a result, when the exam day comes you will not only be well prepared but will also know it, having built up confidence in your abilities.

8. Practice, practice, practice!

No doubt you’re familiar with the phrase “practice makes perfect.” There is a reason why this is such a popular saying: it’s true! Not all practice is equal, though. Varied practice that aims at building on existing skills and knowledge is much more high yielding than repetition. No matter how clever you are, no matter how good of a student you’ve been or how proficient in math you are if you do not put enough time and effort in your prep you are not likely to be happy with the end result. Even the top tutors and courses out there won’t be able to help you out if you don’t give your best. So remember, don’t just go through the motions, but practice by constantly looking at the same problems and concepts in new ways, and trying to use them in novel situations, and you’ll find your GMAT prep vastly accelerated.

That was the list of 8 strategies to help you score high on the GMAT. Keep in mind that what works for one person will not necessarily work for another as everybody learns differently. It is only through practice and proactive learning that you will be able to find what are the best methods for your success. 

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Posted on
07
Jul 2020

GMAT Problem – Speed Distance Problem

Speed and distance problems are among the most complained about problems on the GMAT. Numerous clients come to us and say they have difficulty with speed and distance problems, word problems, or work rate problems. So we’re going to look at a particularly difficult one and see just how easy it can be with the right approach.

The Two Cars Problem

In this problem we have two cars – car ‘A’ and ‘B’. Car ‘A’ begins 20 miles behind car ‘B’ and needs to catch up. Our immediate DSM (Default Solving Mechanism) is to dive in and create an equation for this and that’s exactly what we don’t want to do.

These types of problems are notorious for being algebraically complex, while conceptually simple. If you hold on to the algebra, rather than getting rid of it, you’re going to have a hard time.

Solution Paths

In this problem we’re going to build up solution paths. We’re gonna skip the algebra entirely. We’re going to take a look at an iterative way to get to the answer and then do a conceptual scenario, where we literally put ourselves in the driver’s seat to understand how this problem works. So if we want to take the iterative process we can simply drive the process hour-by-hour until we get to the answer.

Iterative solution path

We can imagine this on a number line or just do it in a chart with numbers. ‘A’ starts 20 miles behind ‘B’ so let’s say ‘A’ starts at mile marker zero. ‘B’ starts at 20. After one hour ‘A’ is at 58, ‘B’ is at 70 and the differential is now -12 and not -20. After the second hour ‘A’ is at 116, ‘B’ is at 120. ‘A’ is just four behind ‘B’. After the third hour ‘A’ has caught up! Now it’s 4 miles ahead. At the fourth hour it’s not only caught up but it’s actually +12, so we’ve gone too far. We can see that the correct answer is between three and four and our answer is three and a half.

Now let’s take a look at this at a higher level. If we take a look at what we’ve just done we can notice a pattern with the catching up: -20 to -12 to -4 to +4. We’re catching up by 8 miles per hour. And if you’re self-prepping and don’t know what to do with this information, this is exactly the pattern that you want to hinge on in order to find a better solution path.

You can also observe (and this is how you want to do it on the exam) that if ‘A’ is going 8 miles an hour faster than ‘B’, then it’s catching up by 8 miles per hour. What we care about here is the rate of catching up, not the actual speed. The 50 and 58 are no different than 20 and 28 or a million and a million and eight. That is, the speed doesn’t matter. Only the relative distance between the cars and that it changes at 8 miles per hour.

Now the question becomes starkly simple. We want to catch up 20 miles and then exceed 8 miles, so we want to have a 28 mile shift and we’re doing so at 8 miles an hour. 28 divided by 8 is 3.5.

Conceptual scenario solution path

You might ask yourself what to do if you are unable to see those details. The hallmark of good scenarios is making them personal. Imagine you’re driving and your friend is in the car in front of you. He’s 20 miles away. You guys are both driving and you’re trying to catch up. If you drive at the same speed as him you’re never going to get there. If you drive one mile per hour faster than him you’ll catch up by a mile each hour. It would take you 20 hours to catch up. This framework of imagining yourself driving and your friend in the other car, or even two people walking down the street, is all it takes to demystify this problem. Make it personal and the scenarios will take you there.

Thanks for the time! For other solutions to GMAT problems and general advice for the exam check out the links below. Hope this helped and good luck!

Found it helpful? Try your hand at some other GMAT problems: Profit & Loss Problem.


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Posted on
17
Apr 2020

The Online GMAT Part 2: Updates & Testing Experience

Mike from Apex GMAT is here to give you part two on our update about the online GMAT exam that’s being rolled out in response to the Covid-19 crisis.

The Exam Overview

This exam is designed to be a standalone, separate exam that’s done in the test centers. While there are going to be many similarities there are also a few key differences that you should know about. If you haven’t done so already I’d encourage you to check out part one of our video. It has a lot of key details about the exam.

Test Scheduling

When it comes to scheduling the exam unfortunately it seems that you can’t take an appointment that you have for a live test center and convert it to an online appointment. I’m not entirely sure why this is but due to pricing differentials, scheduling differentials, your online exam has to be a separate enrollment. Your live exam can still be rescheduled for a time when a test center opens.

Take it 24/7

One of the benefits of the online exam is that you can schedule to take it 24/7. It’s going to operate around the globe so there’s no middle-of-the-night blackout time. You can do it at that time of the day that you feel most pumped for the GMAT. This is really great because many times were forced into a time slot either because availability or just because you might be a night owl and the testing center closes at 5:00pm. So this is a real advantage for people who feel on at all hours.

Setup & Proctoring

There are several key things that are going to take place in the setup and proctoring of the exam for security purposes that you should be aware of. First off, there’s going to be a live proctor watching you during the exam. They’ll be able to see you and listen to you during the entirety of the exam. If you have a problem, if you have questions you can both buzz them in a chat or raise your hand and they’ll come on camera live. If you’re having a connection issue or there’s some technical glitch the GMAC is pledged to be fair and not take off time from your exam. However, if you’re raising your hand for the proctor for something that wasn’t an issue, your time, your clock doesn’t stop. So in that sense it’s just like the live GMAT.

Technical Issues

If there’s a major technical issue retakes are available but that’s really going to be something that’s subject to the judgment of the GMAC. We would expect that their system works very well and that the need for a true retake is going to be very rare. Coinciding with this you’re only going to be able to take the online GMAT one time. You won’t get your score immediately but rather sometime within about seven days. It’s a score that can’t be canceled because the online GMAT is designed to only be taken once.

So it’s really more of an emergency measure where people who need to take the GMAT to get an application out should be able to do so. But those same people shouldn’t be able to cancel their score because this is their their ultimate attempt. That being said, there’s nothing stopping you from taking additional GMATs once the live appointments become available. Do be careful here, because it can lock you into a score that you might not want.

Exam Check-In

The check-in procedure for the exam is somewhat involved. It’s done live with a proctor and it takes 10 to 15 minutes. What they’re going to have you do is take a selfie, upload a photo or a snapshot of your photo ID. Then they’re actually going to have you walk around the room. Show them the corners, show them that your desk is clear without any papers on it. Show them the door to the room to ensure that there’s no one in the room. For the duration of the exam, including the breaks, you won’t be permitted to leave the room.

Exam Section Order

The online GMAT has a predetermined order of sections. So unlike the testing center version of the GMAT you won’t be able to pick and choose which sections you do first, second and so on. So after the check-in you’ll be immediately directed to the quantitative section, then the verbal, a five-minute break and then the integrated reasoning and then you’re done.

Scratch Paper

With respect to the scratch paper that we normally get in an appointment GMAT which is that dry erase sort of stuff – on the online GMAT you won’t be permitted to write as we understand it. There’ll be an online calculator for the integrated reasoning section just like on the normal GMAT and then you’ll have a white board that should be some sort of adjustable screen window that you can scribble on and you should be able to move it around the screen for your convenience during the exam.

And this is something that we’re mildly concerned about and you know we have this saying here, “if you’re doing math you’re, doing something wrong.” That said having scratch paper and the comfort of physical pen and paper is something that a lot of people rely upon so keep this in mind as you get ready to take the online GMAT.

Extra Time On The Exam

Finally, for those of you who have an accommodation of extra time from the exam, the online GMAT isn’t available now but they expect that functionality to roll out in mid-may both for time and a half and double time and that also includes an extended break instead of five minutes going to ten minutes in between the verbal and the integrated reasoning.

Check Pearson Vue’s video about the testing experience.

Thanks so much for watching, email us with any questions. We’re here to help during this time and stay safe and healthy out there.

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Posted on
16
Apr 2020

Online GMAT Exam

Hi guys. Mike here from Apex GMAT, bringing you the latest on the online GMAT exam. The GMAC just announced that they’re rolling out the online GMAT.

When can you take the Exam?

The earliest appointments that are available are April 20th and appointments extend all the way to June 15th. You should be able to log on right now to secure your appointment. All the links you need are below this video for understanding all the rules and everything else that are going to be governing the online exam. But I’m here to bring you what we know. I’ll be here again tomorrow after we have our call with the GMAC to give you additional details and context.

Key Information About the Exam

Most computers and most high speed interconnect internet connections should be fine for taking the GMAT online. You will need either a PC or Mac and Windows 8.1 or 10 or Mac OS 10 point 13 or above. Windows 7 will not work and unfortunately for you hackers and private people of the world Linux and UNIX OS’s will not work.

There are some additional specifications that you need to be aware of. Number one is that you can’t connect over a VPN and a lot of firewalls might disrupt the connection. There will be a protocol for the GMAC to test your connection before you take the exam but if you’re connecting through a work computer you may run into some issues. Similarly, due to the security protocol you won’t be able to have a second monitor hooked up and you’re going to need a webcam that’s operating at least 10 frames per second as well as an internet connection that is at least 1 Mbps.

In addition to this there will probably be some additional protocols where you need to check in because they’re using online proctor’s to actively monitor your taking of the exam and this means unfortunately that a few countries because of data and privacy laws will not be able to take advantage of the online GMAT which include China, North Korea, Sudan, Iran, Cuba and Slovenia. So if you’re in one of those countries unfortunately you can’t take the online GMAT exam.

The cost for the online GMAT is two hundred dollars ($200) and you should also be able to use an existing registration to make a new appointment for the online GMAT.

Format of the Exam

Format wise it’s going to be almost exactly the same with the exception of the writing section. There won’t be one so for those of you who have stamina issues on the GMAT the good news is that the exam will be a half hour shorter. For those of you who have experienced GMAT anxiety which I talked about with several other videos one of the nicest things about the online exam is that you’ll be able to take it in the comfort of your own home or your own space. Doing so is going to offer some significant benefits but also a few liabilities because you’re much more prone to be distracted when you’re in your own space.

So one of the things I would certainly recommend is preparing to sit the exam like you were going to sit at a testing center that means sitting up straight. Ensuring that you have as much quiet as possible, earplugs should be available to you and you should have clothes on (you know, no pajama pants). Dress as if you were taking the exam, wear shoes because these things will put you in a good headspace to be attentive in taking the exam seriously.

Taking the Exam with a Disability

For those of you with disabilities the accommodations for disabilities are not yet installed in the online GMAT exam so they expect those to be available by mid May.

Scoring

In terms of getting your score right now they expect that the score should be available within a week of taking the exam. I don’t know if that means that they’re going to be recalibrating the exam for any bumps or dips they see in the different format or because the exam is shorter or if they’re going to offer something much more immediately like on the real GMAT but give it an extra level of supervision before they make it official. That’s something that we should have more information for you on tomorrow.

Additional Information and Help

All the pertinent information you guys need about the online exam are in the links below including the ability to register for the GMAT’s online webinar and Friday the 17th where you can have additional questions answered. Thanks so much for watching, stay safe and healthy and I wish you all the best in your online GMAT. Of course if you need us for anything you can email questions to us at this address [email protected]

 

Update: Get more information about the online GMAT in this follow up video: Online GMAT Update.

 

 

 

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Posted on
25
Mar 2020

GMAT Videos: Will They Help Improve My Score?

You most likely navigated to this video after watching some other GMAT videos. If you’re self-prepping by watching a lot of GMAT videos I’ve got some bad news for you. It’s a very low yield way to prep, especially if you’re doing it to the exclusion of other things.

Passive Learning

Now we have plenty of videos up here: some informational, many problems, testimonials, all kinds of stuff. It’s not that they don’t have a role in your preparation.

However, if you’re spending a lot of your prep time on a regular basis watching videos then what you’re engaging in is passive rather than active learning. Again, that’s a very low yield way to learn. That’s the most generous explanation. A realistic explanation might be that you’re using these videos, going around YouTube, looking at different platforms, as a way to feel like you’re making progress. Especially if you’ve been prepping for a long time without a measurable result or if you’ve hit a plateau.

This idea of doing more, engaging more, watching more videos, doing more problems, seems like a really good idea because that’s worked for you in the past. But in fact what you’re doing is self-medicating the psychological anxiety of either not improving or having to put forth meaningful effort & work to change the way you’re approaching the GMAT.

Change Your Approach to Watching GMAT Videos

The good news is there’s a solution for this and it doesn’t mean that you need to stop watching videos. When you’re watching GMAT videos you should be then taking a step back and practicing what you’ve learned. Changing what you’ve learned to see if it’s really sunk in or if you’re really just feeling forward momentum because you’re spending time exposed to the GMAT.

This is sort of a kin to feeling smarter because you carry books around, if you never read the books. You know the book, you know the title and you know the author. If you don’t know what’s inside or you have the story memorized but you don’t know the meaning behind it, the symbolism, why the author wrote it, then you can’t really be said to know the book.

Problem Identification Is Only Half The Work

The GMAT is the same way. It’s very easy to convince ourselves that we’re making progress. Or that we’re proficient by saying “oh yeah that’s a work rate problem. That’s a data sufficiency problem which is a system of equations”. And use that anchor of identification as a way to say I know this when in fact it’s a very surface level understanding.

In order to get to a deeper level, you need to not only recognize what you’re looking at but be able to respond to it in a new and interesting way.

What you need to be able to do is not just recognize the problem when you’re looking at those types of problems but recognize them within the general universe of other types of problems that you’re looking at. Just like when you’re sitting in the exam. A core skill is being able to not just recognize the problem but also have a good idea of what to do when you encounter that type of problem.

A work rate problem, to take this example further isn’t a particular problem, it’s a category of problems. Depending upon the way they introduce this problem determines what solution paths, what avenues of approach are going to be the most useful, the most time-efficient and depending on your learning style the most intuitive for you. The skill that you really want to grow in watching GMAT videos is using them as a basis in order to have a better sense of what you ought to be doing. That is, develop the skill of decision-making in an unknown environment not just identification.

Continue to Watch GMAT Videos

As you continue to watch videos keep this in mind but if you’re sitting there just watching video after video, frankly you’re wasting your time. Be sure to take a step back and ensure that you’re able to not just replicate what you’ve seen done in a video but to understand when it’s appropriate to use it and be prepared to do so in a less confined, less predetermined setting. I hope that is helpful and it’s not designed to make you feel bad about what you’re doing but to enhance what you’re doing. I’ll see you guys next time.

If you enjoyed this video watch: How to Avoid Stupid Mistakes on the GMAT.

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Posted on
24
Mar 2020

Stupid Mistakes – How to Avoid Them on the GMAT

Stupid Mistakes On The GMAT

Hi guys. Welcome back to Apex GMAT’s channel. It’s Mike here and today I want to talk about stupid mistakes and let’s start how just with nomenclature. The idea of a stupid mistake is something that we really don’t like here. We don’t like the word dumb. We don’t like the word stupid because even if you’re saying it in a “haha” joking way and you’ve got high self-esteem and a lot of intellectual rigor you’re suddenly putting yourself down. You’re also drawing away attention from the core reasons for these errors.

Careless Mistakes

So we like to call them careless mistakes or careless errors and this allows them to be addressed to be solvable. If you’ve done a stupid mistake either you’re stupid, hopefully not, or you’ve done something foolish. What you’re doing is offloading the responsibility for that error to it being unavoidable. I was not functioning well so I did it rather than addressing the root cause. This is not that you made an error but that there’s a step before the error was made where you failed to catch the error. That step can be before or after the actual processing error was made. Most often it’s sourced from a lack of attentiveness. You’ve missed a detail because you haven’t read closely enough or you crossed your wires through what they call labeling error. Where you’ve called one thing by the wrong name and stored it incorrectly in your head.

Difficulty of Addressing Careless Mistakes

Careless errors are notoriously difficult to address, but the first step is recognizing what they are. They’re processing errors that require your attention and this is something very different than any intellectual failing. It doesn’t matter how smart you are, everybody makes careless errors. Frankly the more rapidly you think the more sort of cycles your brain goes through in a given second or minute the more likely you are to make a careless error. So what differentiates people who make many versus those who make few? Infact the people who make fewer careless errors make just as many as those who make more except they tend to catch them.

How to Work On Them

There are heuristics that we can work on both to preempt careless errors but also to recognize them. Numerically for example you often catch a careless error by noticing that the number doesn’t sound right. If I tell you that it is 150 degrees out. Fahrenheit or Celsius you know that that number doesn’t sound right because it’s anchored to a reality. A lot of times when we’re doing math on the GMAT or in life we don’t have a good anchor for those numbers so the idea of a reasonable or unreasonable number doesn’t get to go through that cognitive filter. So anchoring whether it’s to temperature or money or number of pumpkins in a field, gives us this added check in order to catch a careless error when we make it.

Pivot Questions

Similarly, when we’re reading a word problem or we’re looking at a verbal problem a lot of times using pivot questions to prioritize and understand and really call out what it is we’re trying to do allows us to be both sensitized when we do make the inevitable error but often get in front of many of the errors that we might otherwise make.

Once again, I want to emphasize that careless errors are not intellectual errors. It has nothing to do with being smart or knowing your stuff and so the moment you write off a dumb or stupid error as oh I need to study that again or I forgot that but I’ll remember it next time you’ve already missed your opportunity to improve. So thanks for watching this video guys check out more below. Remember careless errors are both inevitable and solvable. So looking forward to catching you next time and continue prepping.

If you enjoyed this video you can watch: GMAT Scoring Plateaus

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