Question

In a class of 40 students the average age is 16 years.

5 students of average age of 14.8 years left the class

and 3 new students of 24, 17.5 and 19.5 years

respectively were admitted. Find average age of the class​

Answer 1

Solution

Age = 16 + 14.8 = 30.8 + 24 = 54.8 + 17.5 = 72.3 + 19.5 = 91.8 ÷ 102 = 0.9

The average age of the class is 0.9