A jar contains only red and blue marbles in a ratio of 6:3. If there are 18 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: D. 36.
- A. 54
Why not A: “54” is not 36.
- B. 42
Why not B: “42” is not 36.
- C. 18
Why not C: “18” is not 36.
- D. 36 ✓
Correct answer
D. 36
Explanation
36 (option D) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 6:3. If there are 18 blue marbles, how many red marbles are there”. Option A (54) is a different value from 36. Option B (42) is a different value from 36. Option C (18) is a different value from 36. Keep 36 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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