8. 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.
A.30 kg
B.35 kg
D.37.25 kg
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Answer – (D)
Explanation:
Total weight of (36+44) Students = (36x40+44x35)kg = 2980kg
Therefore average weight of the whole class = (2980/80) kg
Therefore average weight = 37.25kg
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