Question

1) The number of boys and girls in the class is in the ratio 5:7. Four years later, the sum of their ages will be
56 years. What are their present ages?​

Answer 1

Explanation:

The ages of Boys and Girls are in the ratio 5:7

Let Boys present age=5x

Girls present age=7x

Four years later the sum of their ages will be 56 years. So according to the condition,

(5x+4)+(7x+4)=56

12x+8=56

12x=56–8

12x=48

x=48/12

x=4

Therefore Boys present age =5*4=20years

Girls present age=7*4=28years