IBPS SO Prelims Exam Model Paper 3

Given:
Average age of father and mother is 68 and average age of son and daughter is 33.
Formula used:
Average age =

Total‌age

No‌of‌person

Calculation:
Total age of father and mother = 2 × 68 = 136
Total age of son and daughter = 2 × 33 = 66
So total age of all family members = 136 + 66 = 202
No of persons in family = 4
Average age =

Total‌age

No‌of‌person

⇒

202

4

⇒ 50.5
∴ The average age of all family members is 50 years 6 months.