Question

15 years hence he will be a twice as old as his son but 5 year ago he was 4 time as old as his son find ages​

Answer 1

Answer:

let the age of men=x

age of son=y

15years hence

the age of men=(x+15)

the age of son=(y+15)

A.T.Q

x+15=2(y+15)

x+15=2y+30

x-2y=30-15

x-2y=15.....................(1.)

5 years ago

the age of men=(x-5)

the age of son=(y-5)

Again A.T.Q

x-5=4(y-5)

x-5=4y-20

x-4y=-20+5

x-4y=-15..................(2.)

from 1. and 2. equations

(see in attachment)