Question

the number of boys and girls in the class are in the ratio 7:5 the number of boys is eight more than the number of girls what is the total class strenght

Answer 1

here is your answer.....

Answer 2

Let ratio be 7x:5x
A/q,
7x-5x=8. 2x=8. x=4
so, total strength =7x+5x =12x =12×4 =48.