Question

the ages of raj and krishan are in the ratio of 2:3 after 15 years,the ratio of their ages will be 3:4 . find their present ages

Answer 1

let age of Raj be 2x
and let the age of kishan be 3x
A.T.Q we have
(2x+15)/(3x+15)=3/4
so we have
4(2x+15)=3(3x+15)
8x+60=9x+45
60-45=9x-8x
15=x
so age of Raj is 2*15=30
and age of kishan is 3*15=45