SSAT Math Question 144: Answer and Explanation
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Question: 144
6. The number of telephones in Adelaide, Australia, is 48,000. If this represents 12.8 telephones per 100 people, the population of Adelaide to the nearest thousand is
- A. 128,000
- B. 375,000
- C. 378,000
- D. 556,000
Correct Answer: B
Explanation:
The correct answer is (B). By knowing how many telephones are in Adelaide (48,000), and how many serve each group of 100 in the population (12.8), we can find how many groups of 100 are in the population.
48,000 telephones ÷ 12.8 telephones per 100 of population = 3750 groups of 100 in the population.
3750 × 100 = 375,000 people