There are two sections A and B of a class consisting of 36 and 44 students respectively. If the average weight of section A is 40kg and that of section B is 35kg, find the average weight of the whole class?
Options:
A . 37.05kg
B . 37.20kg
C . 37.50kg
D . 37.25kg
Answer: Option D
Total weight of (36+44) students=(36*40+44*35)kg=2980kg. Therefore weight of the total class=(2980/80)kg=37.25kg.
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