Question

the number of boys and girls in a class ratio 7 : 5 the number of boys is 8 more than number of girls what is the total class strength

Answer 1

Let the number of boys be 7x
Number of Girls be 5x.

According to question
7x = 5x +8
7x-5x = 8
2x = 8
x = 8/2
x = 4

Total strength = 7x+5x
= 12x
= 12(4)
= 48

Answer 2

heay
let the total no. of student be =x

girls= 5x

boys=7x
-5x + 7x =8

2x = 8

x=8÷2 = 4

7×4= 28
5×4=20

girls =20
boys =28