SAT Math Multiple Choice Practice Question 237: Answer and Explanation

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Question: 237

17. A jar contains only red, white, and blue marbles. It contains twice as many red marbles as white marbles and three times as many white marbles as blue marbles. If a marble is drawn at random, what is the probability that it is white?

A.
B.
C.
D.
E.

Correct Answer: C

Explanation:

C Let's say there are x blue marbles in the jar. This means there are 3x white marbles, and red marbles, for a total of 10x marbles. Since 3x are white, the probability of picking a white is .

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