A jar contains only red and blue marbles in a ratio of 9:8. If there are 32 blue marbles, how many red marbles are there?

Correct answer

A. 36

Explanation

The ratio 9:8 means for every 8 blue marbles there are 9 red. 32 blue ÷ 8 = 4 groups, so red marbles = 9 × 4 = 36.

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