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.
5 368 6401b25a86fd4161466cd736
Q:
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
- Show Answer
- Workspace
- Discuss