There are two sections Y and Z of a class, consisting of 288 and 352 students respectively. If the average weight of sections Y is 320 kg and that of sections Z is 280 kg. Find the average weight of the whole class	Choices:
A) 297.5 B) 298.0 C) 298.5 D) 299.0 E) None
Solution   Total weight of(288+352)Students	= (288x320+352x280)Kg   = 1,90,720 kg.   Average weight of the whole class	= (190720 / 640)   = 298.00.   Answer 298.0
<result>B</result>
There are two sections Y and Z of a class, consisting of 288 and 352 students respectively. If the average weight of sections Y is 320 kg and that of sections Z is 280 kg. Find the average weight of the whole class