There are two Sections A and B of 10th Class, consisting of 36 and 44 students respectively. If average weight of Section A is 40Kg and Section B is 35Kg. Find the whole Class average weight?

Class 10th = Section A & Section B
Total Students=36+44=80
Total Weight of Class=40*36 + 44*35
Total Weight=1440+1540=2980Kg
Average Weight= Total Weight / No of Students
Average Weight =2980/80=37.25Kg