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  3. If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase t

If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase t

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问题 If 55 percent of the people who purchase a certain product are female, what is the ratio of the number of females who purchase the product to the number of males who purchase the product?
选项 A、11 to 9
B、10 to 9
C、9 to 10
D、9 to 11
E、5 to 9
答案A
解析 Note that because 55 percent of the people who purchase the product are females, it follows that 45 percent of the people who purchase the product are males. Therefore, the ratio of the number of females who purchase the product to the number of males who purchase the product is 55 to 45, or 11 to 9, and the correct answer is Choice A.
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