Ena was born 4 years after her parents’ marriage. Her mother is three years younger than her father and 24 years older than Ena, who is 13 years old. At what age did Ena’s father get married?

Answer is (b).

Ena’s present age = 13

Ena’s mother’s present age = 13 + 24 = 37.

Ena’s father’s present age = 37 + 3 = 40.

Now at present Ena is 13 years old and her parents got married 4 years before she was born.

So, Ena’s parents got married 13 + 4 = 17 years earlier.

So at the time of marriage her father would be of 40 – 17 = 23 years old.