Question

In a class room the number of boys and girls are in the ratio of 7:5. The number of boys are 8 more than number of girls. Find the total number of students in the classroom

Answer 1

girls =4
boys=12 answer

Answer 2

let no.of boys be x and girls be y
x=y+8
x/y=7/5
5x= 7y
put x = y+8
5(y+8)=7y
5y+40=7y
2y=40
y=20
put y=20
x=20+8
=28