Source: Official Guide for GMAT Review 2016 Problem Solving; #46

1

1/0.750-1 =

1/0.750-1 =

1 Explanation

1

Carlson Rainer

Hi I am completely stumped on this one, and the OG doesn't do a very good job of explaining this one. Any help is greatly appreciated - this is a great tool so far.

Jan 13, 2017 • Comment

Sam Kinsman, Magoosh Tutor

Hi Carlson,

Happy to help!

We have 1 / (0.75 - 1). We know that 0.75 - 1 = -0.25. So now we have:

1 / -0.25

We can multiply both sides by 4 to get:

4 / -1

This is the same as -4 / 1, which is simply -4.

Jan 14, 2017 • Reply

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Official Guide for GMAT Review 2016

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Section 5.3 Problem Solving

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