A father’s age at the time of the birth of his son is the same as the present age of the son. If the age of the son was 15 years five years ago, then what is the current age of the father?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 40 years
The father’s age when the son was born is the difference between their ages, and that difference never changes.
Son’s present age \(=15+5=20\) years
Father’s age at the son’s birth \(=\) son’s present age \(=20\) years, so the father is always 20 years older
Father’s present age \(=20+20=40\) years