There are two sections P and Q of a class, consisting of 144 and 176 students respectively. If the average weight of sections A is 160 kg and that of sections Q is 140 kg. Find the average weight of the whole class
Choose the correct choice from the following options.
A) 147.5	B) 148.0	C) 148.5	D) 149.0	E) None
Solution   Total weight of(144+176)Students	= (144x160+176x140)Kg   = 47680 kg.   Average weight of the whole class	= (47680 / 320)   = 149.00.   Answer 149.0
<result>D</result>
There are two sections P and Q of a class, consisting of 144 and 176 students respectively. If the average weight of sections A is 160 kg and that of sections Q is 140 kg. Find the average weight of the whole class