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?
- 37.25 kg.
- 37.85 kg.
- 35.25 kg.
- None of these
Explanation
Total weight of (36 + 44) Students,
= (36 × 40 + 44 × 35) kg
= 2980 kg
Therefore average weight of the whole class,
= 298080 kg.
Therefore average weight = 37.25 kg.
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