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Answer : 2. "31 kg "
There are two groups A and B of a class, consisting of 42 and 28 students respectively. If the average weight of group A is 25 kg and that of group B is 40 kg, find the average weight of the whole class.
5Q:
There are two groups A and B of a class, consisting of 42 and 28 students respectively. If the average weight of group A is 25 kg and that of group B is 40 kg, find the average weight of the whole class.
- 169 kgfalse
- 231 kgtrue
- 370 kgfalse
- 430 kgfalse
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Answer : 2. "31 kg "
Explanation :
