Question

in 34 years john will be three times as old as he is now. find his present ages

Answer 1

let the present age be x.
after 34 years his age will be x + 34.
so,

x + 34 = 3x
2x = 34
x = 17 years

∴his present age is 17 years

Answer 2

John is 17 years old

X + 34 = 3x
2x = 34
X = 17