Question
5
Selected one answer choice
收藏
笔记
反馈
In a group of children, the average (arithmetic mean) weight of the boys is 60 pounds, and the average weight of the girls is 48 pounds. If the average weight of all of the children in the group is 50 pounds, what is the ratio of the number of boys to the number of girls?
A.112
B.16
C.15
D.14
E.13
我的答案：