SAT Math Multiple Choice Practice Question 399: Answer and Explanation

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Question: 399

3. A survey of Town X found an average (arithmetic mean) of 3.2 persons per household and a mean of 1.2 televisions per household. If 48,000 people live in Town X, how many televisions are in Town X ?

A. 15,000
B. 16,000
C. 18,000
D. 40,000
E. 57,600

Correct Answer: C


C This is an excellent time to turn on your calculator. If 48,000 people live in Town X and each household has 3.2 people, you can determine the number of households: 48,000 ÷ 3.2 = 15,000. And since each household has 1.2 televisions, you can now determine the number of televisions: 15,000 × 1.2 = 18,000.

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