Question

30. The average age of 20 boys is 15.

Find their total age.
B.35 years
A. 20 years
D. 300 years
C. 5 years​

Answer 1

D. 300 Years is the correct answer.

Step by Step Explanation:

20×15= 300

Answer 2

D. 300 years

Explanation:

Mean =
`(sum of observations)/(no. of observations\\)`

Here we know the mean which is 15 and the number which is 20

Total age = 15 × 20

Total Age = 300 years