The average age of 5 children is 10 years. If two more children of ages 11 years and 16 years join, then what will be the new average age?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 11 years
The average age of 5 children is 10 years.
Sum of the ages of 5 children = 10 x 5 = 50
If two more children of ages 11 years and 16 years join, then New average age = (50 + 11 + 16) / (5 + 2)
= 77/7
= 11 years.