题目信息
In a certain school, there are 160 boys and 240 girls. If 15 percent of the boys are left-handed and 25 percent of the girls are left-handed, what percent of the school's entire student population is left-handed?
A:18
B:20
C:21
D:23
E:24
参考答案及共享解析

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已选答案:
正确答案:
C:21
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题目来源
Magoosh