Source: Official Guide Revised GRE 1st Ed. Part 6; Set 3; #3

4

x is an integer greater than 1

x is an integer greater than 1. Quantity A : 3x+1 Quantity B : 4x Quantity A is greater., Quantity B is greater., The two quantities are equal., The relationship cannot be determined from the information given.

2 Explanations

1

Rupom Bhattacharjee

We can simplify A a little bit. We can write A as 3^x * 3. Now that 3^x is a positive number we can divide A and B by 3^x.

That leads us to: 3 ?? (4/3)^x.

Now because 4/3 is greater than 1, it's clear that if x's value increase the value of B will also increase. So at one point it will be greater than 3. Thus the answer is D.

Aug 17, 2018 • Comment

David Recine, Magoosh Tutor

That's a very clever workaround, Rupom! :D

Aug 21, 2018 • Reply

2

Gravatar Chris Lele, Magoosh Tutor

Oct 7, 2012 • Comment

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