Question

The average of marks scored by the student of a class is 68 . the average of marks of the girls in the class is 80 and that of boy is 60. what is the percentage of boys in the class

Answer 1

Hey

Here is your answer,

let no of girls be x noo of boys be y.
80x+60y/x+y=68.
So x/y=2/3%
=3×100/5=60%

Hope it helps you!