A jar contains only red and blue marbles in a ratio of 8:2. If there are 10 blue marbles, how many red marbles are there?
Difficulty: Medium
About this MCQ
Medium SAT item. Correct choice: B. 40.
- A. 10
Why not A: “10” is not 40.
- B. 40 ✓
- C. 50
Why not C: “50” is not 40.
- D. 48
Why not D: “48” is not 40.
Correct answer
B. 40
Explanation
40 (option B) is the accepted answer to “A jar contains only red and blue marbles in a ratio of 8:2. If there are 10 blue marbles, how many red marbles are there”. Option A (10) is a different value from 40. Option C (50) is a different value from 40. Option D (48) is a different value from 40. Keep 40 as the SAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: SAT, Math, American Exams, Ratios
Submitted by: MCQsHub Editorial