Question

The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg . Find the average weight of all the boys in the class .​

Answer 1

Given

• The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg .

To find

• the average weight of all the boys in the class .

Solution

★ As, the average weight of of 16 boys

→ 50.25 kg

So, the total weight of 16 boys

→ 16 × 50.25 kg

and , the average weight of 8 boys

→ 45.15 kg

Therefore , the total weight of 8 boys

→ 8 × 45.15 kg

So , the average weight of all the boys

in the class

= The total weight of all the boys / The total number of all the boys

→ 16 × 50.25 + 8 × 45.15 / 24

→ 804.00 + 361.20 / 24

→ 1165.20 / 24

→ 48.55 kg.

Hence , 48.55 kg is the average weight of all the boys in the class .