Question

how to do this plzz tell to me

Answer 1

Ratio of the present ages of Andy and Mike =5:3
Let their ages be 5a:3a

If Andy had been 7 years older and Mike had been 7 years younger
.......................………………………………………………
SO,
5a+7 =3(3a-7)
=5a+7=9a-21
=7+21 = 9a-5a
=28 = 4a
a=28/4
a=7
Hence, Andy =5a
=5*7
=35 years
Mike =3a
=3*7
=21 years