Correct Answer - Option 3 : 44 years
Given
Average age of 8 men is increased by 3 years when two of them whose age are 30 and 34 years are replaced by 2 persons.
Concept used
Average
Calculation
Total increase in age
⇒ 8 × 3 = 24 years
Sum of the age of two persons
⇒ 30 + 34 = 64
If the age of new person same as replaced person then there would have been no change in average. But average age of 8 persons increased by 3 years
Average of new persons
⇒ (64 + 24)/2
⇒ 44 years
