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

A. 47.55 kgs

B. 48 kgs

C. 48.55 kgs

D. 49.25 kgs

Answer: Option C

Solution(By Examveda Team)

Required mean
$$\eqalign{ & = \left( {\frac{{50.25 \times 16 + 45.15 \times 8}}{{16 + 8}}} \right) \cr & = \left( {\frac{{804 + 361.20}}{{24}}} \right) \cr & = \frac{{1165.20}}{{24}} \cr & = 48.55 \cr} $$