The correct answer would be option A, 37.25
If the average weight of section A is 40 lbs and that of section B is 35 lbs. The average total weight of the whole class is 37.25
Explanation:
No of students in section A=36
No of students in section B=44
Average Weight of students of section A=40 lbs
Average Weight of students of section B=35 lbs
Total no of students in section A and B = (36 + 44) = 80 Students
Total weight of students in Section A=36*40=1440 lbs
Total weight of students in Section B=44*35=1540 lbs
Total weight of the Students in Section A and B = 1440+1540 = 2980 lbs
Therefore average weight of the whole class,
= 2980/80
Average weight of the whole class = 37.25 lbs.
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