Question

There are 30 students in a class. The average weight of 12 students is 40 kg and the average weight of the remaining 18 students is 42 kg each. Then, the average weight of all the students is

Plz answer sensibly....i will report useless answers

Answer 1

Answer:

41.2 or 41

Step-by-step explanation:

12 Students weight average= 40

then, 12×40=480(total weight of 12 stundents)

18 students weight average= 42

then, 18×42=756(total weight of 18 students)

total average weight of all students=480+756

=1236÷30(as we need to find average of 30 so divide by 30)

=41.2 or 41