A jar contains only red and blue marbles in a ratio of 5:3. If there are 21 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: B. 35.
- A. 21
Why not A: “21” is not 35.
- B. 35 ✓
- C. 56
Why not C: “56” is not 35.
- D. 40
Why not D: “40” is not 35.
Correct answer
B. 35
Explanation
35 (option B) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 5:3. If there are 21 blue marbles, how many red marbles are there”. Option A (21) is a different value from 35. Option C (56) is a different value from 35. Option D (40) is a different value from 35. Keep 35 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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