One of the many GMAT math concepts that we learn in grammar school but probably don’t use very often in real life is how to work with factors. Factors are numbers that go into other numbers evenly. For example, 3 and 4 are factors of …

Read More## Percents: More than Calculating Tips

Even if you have already learned how to accurately and quickly calculate a tip using mental math, you may still be struggling with percentage questions on the GMAT. Today we will look at three questions that test percents in different ways. Let’s start with …

Read More## What if I’ve Never Seen that Question Type Before?

If you have done any GMAT practice yet, you have probably realized that there is plenty of algebra and geometry on the test. Those two question types undoubtedly make up the majority of the questions, so you need to be very comfortable and efficient answering …

Read More## Get Over Your Fear of Fractions!

If you’ve read the Assigning Values section in my book, you probably already have a good working knowledge of the fundamentals of this strategy. You will probably immediately recognize that question 198 on page 180 of the GMAT Official Guide 13th Edition is a good …

Read More## The Official Guide 13th Edition How To Quantitative: Page 166, #104

With 75 minutes to solve 37 questions, you have roughly 2 minutes per question on the quantitative section. Since you aren’t allowed to skip back and forth among questions, you need to pace yourself wisely, which means identifying opportunities to take (accurate) shortcuts on some …

Read More## The Official Guide 13th Edition How To Quantitative: Page 166, #105

The Official Guide recommends solving this problem by applying the variables s and t to the number of students and the number of teachers, respectively. However, setting up algebraic equations isn’t always easy. You may want to try backsolving on this question instead. Start with …

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