Question

Two ywars ago a amn is 3 times as old as his som. 2 years hence his twice age is eqaul to 5 times of son

Answer 1

Let mans age be x
Let sons age be y

Two years ago
x-2=3(y-2)
x-2=3y-6
x-3y=-4 (*2)
2x-6y=-8________(1)

two years hence
2(x+2)=5y
2x-5y=-4_______(2)

(1)-(2)
-y=-4

y=4
therefore x =3y-4=12-4=8
x=8