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The ratio of girls to boys in a class is 3 to 4. If there are a total of 28 students in the class, how many girls are there?
The ratio of girls to boys in a class is 3 to 4. If there are a total of 28 students in the class, how many girls are there?
admin
2021-05-18
22
问题
The ratio of girls to boys in a class is 3 to 4. If there are a total of 28 students in the class, how many girls are there?
选项
A、12
B、16
C、6
D、24
E、21
答案
A
解析
班级里女生对男生的比例是3:4,那么女生在班级里所占的比例是3/7,3/7×28=12,所以选择A。
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