A jar contains only red and blue marbles in a ratio of 9:6. If there are 42 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: C. 63.
- A. 72
Why not A: “72” is not 63.
- B. 42
Why not B: “42” is not 63.
- C. 63 ✓
- D. 105
Why not D: “105” is not 63.
Correct answer
C. 63
Explanation
63 (option C) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 9:6. If there are 42 blue marbles, how many red marbles are there”. Option A (72) is a different value from 63. Option B (42) is a different value from 63. Option D (105) is a different value from 63. Keep 63 as the GRE fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, GRE, Ratios
Submitted by: MCQsHub Editorial
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