A jar contains only red and blue marbles in a ratio of 2:7. If there are 35 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium GRE item. Correct choice: D. 10.
- A. 35
Why not A: “35” is not 10.
- B. 12
Why not B: “12” is not 10.
- C. 45
Why not C: “45” is not 10.
- D. 10 ✓
Correct answer
D. 10
Explanation
10 (option D) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 2:7. If there are 35 blue marbles, how many red marbles are there”. Option A (35) is a different value from 10. Option B (12) is a different value from 10. Option C (45) is a different value from 10. Keep 10 as the GRE fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, GRE, Ratios
Submitted by: MCQsHub Editorial