Question

The mean weight of 60 students in a class is 40 kg. The mean weight of boys is 50kg and girls is 30 kg. Find number of girls and boys in class

Answer 1

Answer:

Let the no. of boys be x and no. of girls be y

therefore,

46(x+y)= 50x +40y

46x +46y=50x +40y

6y=4x

x/y=3/2=1.5

hence, Ratio of no. of boys to no. of girls= 3:2 Ans.

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