Question

5year ago aman was 7times as old as his son .After 5years he will be thrice as oldas his son .Find their present age.

Answer 1

Answer:x=5

Step-by-step explanation:Sons age 5 years ago=x father's age = 7x

their present age = x+5 and 7x+5 resp

Sons age 5 years hence = x+10(since x is sons age 5 years ago from present age and we are talking of his age 5 years hence from his present age so 5+5=10)

fathers age 5 years hence =3(x+10)

hence the fathers present age will be 3(x+10)-5

also fathers present age =7x+5

therefore 7x+5=3(x+10)-5

7x+5=3x+30-5

7x-3x=25-5

4x=20

x=5