There are two divisions A and B of a class, consisting of 36 and 44 students respectively. If the average weight of divisions A is 40 kg and that of division b is 35 kg. What is the average weight of the whole class?	Choose one:
A) 37.0
B) 37.75
C) 37.5
D) 37.25
E) 38.0
Total weight of students in division A = 36 × 40   Total weight of students in division B = 44 × 35   Total students = 36 + 44= 
<gadget id="calculator">36 + 44</gadget>
<output>80</output>
80   Average weight of the whole class=((36×40)+(44×35))/80   =((9×40)+(11×35))/20   =((9×8)+(11×7))/4   =(72+77)/4   =149/4= 
<gadget id="calculator">149/4</gadget>
<output>149/4 = around 37.25</output>
37.25   Answer is 37.25.
<result>D</result>
There are two divisions A and B of a class, consisting of 36 and 44 students respectively. If the average weight of divisions A is 40 kg and that of division b is 35 kg. What is the average weight of the whole class?