A jar contains only red and blue marbles in a ratio of 2:3. If there are 15 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium SAT item. Correct choice: B. 10.
- A. 15
Why not A: “15” is not 10.
- B. 10 ✓
- C. 25
Why not C: “25” is not 10.
- D. 12
Why not D: “12” is not 10.
Correct answer
B. 10
Explanation
10 (option B) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 2:3. If there are 15 blue marbles, how many red marbles are there”. Option A (15) is a different value from 10. Option C (25) is a different value from 10. Option D (12) is a different value from 10. Keep 10 as the SAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: SAT, Math, American Exams, Ratios
Submitted by: MCQsHub Editorial