Question 16(d)
The present age of the father is 42 years and that of his son is 14 years. Find the ratio of:
Age of father to the age of son when father was 30 years old.
When father was 30 years old i.e. 42 - 30 = 12 years ago,
then the age of son was 14-12 = 2 years.
Therefore, the ratio of their ages when father was 30 years old
= 302=151=15:1 [Dividing numerator and denominator by HCF of 30 and 2 i.e. 15]