Question

the ages of A and B are in ratio 7: 5.Ten years hence the ratio of their ages will be 9:7 find their ages

Answer 1

let their age be

7x and 5x

a/q

7x+10/5x+10=9/7
49x+70=45x+90
49x-45x=90-70
4x=20
x=5

A=7x=7×5=35
B=5x=5×5=25

A is 35 year old
B is 25 year old