Question

if the number of girls in a class is eight less than the number of boys and the ratio of the number of boys to number of girls is 7 ratio 5 then find the number of boys and number of girls in the class

Answer 1

x-8/X=7/5

5x-40=7x

2x=40

X=<20

Answer 2

Answer:28

Step-by-step explanation: let the no. of boys=x

No. of girls =(x-8)

Ratio=x : (x-8).

According to the question ratio= 7:5.

x/x-8 = 7/5

On cross multiplying.

5x=7(x-8).

5x = 7x - 56

7x-5x=56.

2x=56.

x=56/2.

Hence, x=28.

Boys in the class =28.