Question

. Helmi's age and his son's age is in the ratio 10:3.

In 5 years' time, their total age will be 62 years.
How old is Helmi's son now?

Answer 1

12 years old

Explanation:

let h = helmi's age and let s = son's age (right now)

10s = 3h

h + 5 + s + 5 = 62

h + s + 10 = 62

h + s = 52

3h + 3s = 156

10s + 3s = 156 (substitution)

13s = 156

s = 12