A jar contains only red and blue marbles in a ratio of 9:2. If there are 16 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: A. 72.
- A. 72 ✓
- B. 16
Why not B: “16” is not 72.
- C. 81
Why not C: “81” is not 72.
- D. 88
Why not D: “88” is not 72.
Correct answer
A. 72
Explanation
72 (option A) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 9:2. If there are 16 blue marbles, how many red marbles are there”. Option B (16) is a different value from 72. Option C (81) is a different value from 72. Option D (88) is a different value from 72. Keep 72 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, Ratios, GMAT
Submitted by: MCQsHub Editorial
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