ISEE Mathematics Achievement Question 42: Answer and Explanation
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Question: 42
14. Population figures for a certain area show there are 
times as many single men as single women in the area. The total population is 18,000. There are 1122 married couples, with 756 children. How many single men are there in the area
- A. 3000
- B. 6000
- C. 9000
- D. It cannot be determined from the information given.
Correct Answer: C
Explanation:
The correct answer is (C). Subtract from the total population of 18,000 the 756 children and the 2244 married people. 18,000 - 756 - 2244 = 15,000 single men and women.
Because there are 1
times as many men as women, we know that 60% of the 15,000 single people are men, and 40% are women. 60% of 15,000 = 9000.