# What was the Average Age of Family? If

The average age of 5 members of a family is 22 years. If youngest member is 5 year old, what was the average age of family at the time of the birth of youngest member?

- 21 years
- 22.5 years
- 21.25 years
- None of these

**Answer: (3) 21.25 years**

**Explanation:-**

The average age of 5 members of a family = 22 years

Then, total age of 5 members of a family = 22 x 5

= 110 years

The youngest member of family = 5 years

The total age of family at the time of the birth of youngest member = 110 – 5 x 5

=110 – 25

= 85 years

Then, the average age of four family members = 85/4

= 21.25 years.

Hence, the answer is (3) 21.25 years.