6 years ago, a father was three times his son’s age. If the son is 15 now, how old is the father now?

A) 34 years

B) 32 years

C) 33 years

D) 35 years

Answer: C

Explanation: Father’s past age = 3 × son’s past age; add elapsed years for present age.
Father now = 3(15 − 6) + 6 = 33 years.