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 the correct choice from the following options
A) 38.25  B) 37.25  C) 38.5  D) 37  E) 37.5
Explanation:   Total weight of students in division A = 36 × 40   Total weight of students in division 37.25 = 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: Option 37.25
<result>B</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?