63. There are two sections A and B of a class, consisting of 36 and 44 students respectively. If the average weight of sections A is 40 kg and that of section b is 35 kg. Find the average weight of the whole class?
A. 36.25 B. 37.25
C. 38.35 D. 39.25
Answer:
Total weight of(36+44)Students = (36x40+44x35)Kg
= 2980 kg.
Average weight of the whole class = (2980 / 80)
=37.25.
