A father is 25 years older than his son. In 5 years, his age will be three times his son's age. What is the present age of the son?

Question: A father is 25 years older than his son. In 5 years, his age will be three times his son's age. What is the present age of the son?Solution:Let the son’s present age be x years.Then, the father’s present age is = x + 25 years.ATQIn 5 years, the father’s age will be three times his son's age.So, (x + 25) + 5 = 3 (x + 5)⇒ 3x + 15 = x + 30⇒ 3x - x = 30 - 15⇒ 2x = 15∴ x = 7.5Therefore, the present age of the son is 7.5 years.