The ratio of the ages of father and son at present is 6:1. After 5 years the ratio of will become 7:2. The present age of the son is :
5 years
6 years
9 years
10 years
Explanation:
6x+5 / x+5=7 / 2
⇒2(6x+5)=7(x+5)
⇒x=5
Sons present age = 5 years
6x+5 / x+5=7 / 2
⇒2(6x+5)=7(x+5)
⇒x=5
Sons present age = 5 years