Question

A father is 30 years older than his his son.In 12 years ,thr man will be three times as old as his son.Find their present ages.

Answer 1

Let the present age of son be x

∴ present age of father is x + 30 (30 years older than son)

In 12 years age of son = x + 12

In 12 years age of father = 30 + x + 12 or x + 42

According to question

Father (x + 42) will be ( = ) 3 times ( 3 ×) of son ( x + 12)

∴ x + 42 = 3( x + 12)

x + 42 = 3x + 36

3x - x = 42 - 36

2x = 6

x = 3

∴ Present age of Son = 3 years

Present age of father = x + 30 = 33 years