A jar contains only red and blue marbles in a ratio of 3:4. If there are 32 blue marbles, how many red marbles are there?

Correct answer

A. 24

Explanation

The ratio 3:4 means for every 4 blue marbles there are 3 red. 32 blue ÷ 4 = 8 groups, so red marbles = 3 × 8 = 24.

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