Correct Answer : Option (A) - 23 years
Explanation :
Chinnu's present age = 10 years.
His mother's present age = (10 + 20) years = 30 years.
Chinnu's father's present age = (30 + 5) years = 35 years.
Chinnu's father's age at the time of Chinnu's birth = (35 - 10) years = 25 years.
Therefore Chinnu's father's age at the time of marriage = (25 - 2) years = 23 years.
