Question

The present age of the father is three times the age of his son. If the age of the son

after 10 years is equal to the age of the father before 20 years, find the present age
of the father and the son.
was​

Answer 1

Hello,

Explanation:

I am just reply to see if i really understand that problem

Let's assume s the present age of the son, and f the present age of the father.

`\begin {array}c&son&father\\now&s&f=3*s\\in\ 10\ years&s+10&f+10\\\end{array}`

The age of the son After 10 years is equal to the age of the father before 20 years:

s+10=f+10-20

f=3s

=> s+10=f-10

=> s+10=3s-10

=> 2s=20

=> s=10 and f=30