GRE Section 2 Quantitative Exam

Exam GRE Section 2 Quantitative All QuestionsBrowse all questions from this exam

Question 18

The arithmetic mean (average) of two numbers is . If the first number is Q, which of the following Expressions represents the other number?

Option A

Option B

Option C

Options D

Option E

Correct Answer: D

Apply the formula for determining arithmetic mean (called AM below), or simple average. Letting x equal the other number, solve for x:

Discussion

MHALLAQ

How did you replaced the AM with PQ???