A jar contains only red and blue marbles in a ratio of 6:2. If there are 14 blue marbles, how many red marbles are there?

Correct answer

C. 42

Explanation

The ratio 6:2 means for every 2 blue marbles there are 6 red. 14 blue ÷ 2 = 7 groups, so red marbles = 6 × 7 = 42.

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