GRE Quantitative Reasoning 2

Question 1

If 3x - 7 = 11, what is the value of x?

Accepted Answer

6

Answer

Add 7 to both sides to get 3x = 18, then divide by 3 to get x = 6.

Question 2

Quantity A: the average of 10, 20, 30. Quantity B: the median of 5, 15, 25, 35. Which is greater?

Accepted Answer

The two are equal

Answer

Quantity A averages to 20 and Quantity B's median is (15+25)/2 = 20, so they are equal.

Question 3

A circle has a radius of 5. What is its area?

Accepted Answer

25π

Answer

Area = πr² = π(5²) = 25π.

Question 4

If the ratio of boys to girls in a class is 3:5 and there are 24 boys, how many girls are there?

Accepted Answer

40

Answer

Each ratio unit equals 24/3 = 8, so girls = 5 × 8 = 40.

Question 5

What is 15% of 240?

Accepted Answer

36

Answer

0.15 × 240 = 36.

GRE Practice Test