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?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 40 years.
Let the current age of the father and son be x and y years respectively.
According to the question;
x - y = y
x = 2y --------- (1)
y - 5 = 15 ------- (2)
y = 20 years
So, the present age of father = 40 years.