A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Hence, the father's present age is ______? - IQ786

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A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Hence, the father's present age is ______?

A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Hence, the father's present age is ______?

45 years

42 years

48 years

None of these

Explanation

Let son's age = x, so father's age = 3x

After 15 years: 3x + 15 = 2(x + 15)

→ 3x + 15 = 2x + 30

→ x = 15 ⇒ father's age = 3 × 15 = 45 years.