SAT Math Multiple Choice Question 27: Answer and Explanation

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Question: 27

3. If a is 63% of x and c is of x, which of the following is the closest equivalent of the ratio of a to c ?

  • A. 0.236
  • B. 0.381
  • C. 0.595
  • D. 1.68

Correct Answer: D


D Since you are never told what x is, and there is no way to find it, plug in for x. Say that x = 100. 63% of 100 is 63, and of 100 is 37.5. The ratio of a to c is . So, = 1.68. To save time, you can ballpark the answer, since a > c and (D) is the only choice greater than 1.

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