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The Area of an Equilateral Triangle

The Area of an Equilateral Triangle

As promised, we will now connect the 30-60-90 triangle to the equilateral triangle, specifically its area. There is a formula for the area of an equilateral triangle as it relates to the length of its side s, and it is as follows: But more likely than not for the...

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GMAT Rate Problems: Algebraic Answers

GMAT Rate Problems: Algebraic Answers

Welcome back to our series on GMAT quant rate problems. In this final article, we’ll explore problems that have algebraic expressions as answer choices. You have a few options whenever you encounter one of these problems, but this article will focus on solving them by...

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GMAT Rate Problems: Instantaneous Speed

GMAT Rate Problems: Instantaneous Speed

Welcome back to our series on GMAT quant rate problems. In the last article, we learned about average speed and observed various ways that data sufficiency problems can try to “trick” test-takers with this concept. This article will contrast average speed against...

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GMAT Rate Problems: Average Speed

GMAT Rate Problems: Average Speed

Welcome back to our series on GMAT quant rate problems. This article and the next will introduce concepts related to average speed. Though average speed is a simple concept, there are many ways for GMAT quant problems to “trick” test-takers with average speed...

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GMAT Rate Problems: Inequalities

GMAT Rate Problems: Inequalities

Welcome back to our series on GMAT quant rate problems. The last article covered rate problems with geometry elements. In this article, we’ll see how rates are used in data sufficiency inequalities problems. Inequalities are a common form of data sufficiency problems,...

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GMAT Rate Problems: Geometry

GMAT Rate Problems: Geometry

Welcome back to our series on GMAT quant rate problems. In the last article, we learned about problems involving fuel consumption rates. This article will address rates problems that incorporate geometry concepts. These are speed = distance/time problems where the...

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GMAT Rate Problems: Multiple Machines

GMAT Rate Problems: Multiple Machines

Welcome back to our series on GMAT quant rate problems. In the last article, we studied problems where two objects are moving, either in the same direction or in opposite directions. This article will return to machines and address problems that feature more than two...

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GMAT Rate Problems: “Two Moving Objects”

GMAT Rate Problems: “Two Moving Objects”

Welcome back to our series on GMAT quant rate problems. The last two articles covered machines working together to complete a job. This article addresses problems that have two objects moving at given speeds instead of two machines working at given rates. Recall from...

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GMAT Rate Problems: Combined Work Problems

GMAT Rate Problems: Combined Work Problems

Welcome back to our series on rate problems. In the first article, we introduced the relationship between the variables of rate, work, and time - or speed, distance, and time. This article and the next will teach you how to approach combined work problems which...

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