There are 2 sections A and B in a class, consisting of 50 and 40 students respectively. If the average weight of section A is 50kg and that of section B is 70kg, Find the average of the whole class? Choose the correct choice from the following answers:	A) 50.78kg	B) 49.32kg	C) 61.67kg	D) 58.88kg	E) 70.89kg
Total weight of 50+40 students = 50*50 + 40*70 = 2500+2800= 
<gadget id="calculator">2500+2800</gadget>
<output>5_300</output>
5300/90= 58.88 kg   Answer is 58.88kg
<result>D</result>
There are 2 sections A and B in a class, consisting of 50 and 40 students respectively. If the average weight of section A is 50kg and that of section B is 70kg, Find the average of the whole class?