The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class. Choose the correct choice from the following
A) 48
B) 48.55
C) 46
D) 34.5
E) 50.0
Avg weight of 16 boys = 50.25   tot weight of 16 boys = 50.25 * 16   avg weight of remaining 8 boys = 45.15   tot weight of remaining 8 boys=45.15*8   tot weight of remaining 8 boys = 45.15 * 8   tot weight of all boys = 50.25 * 16 + 45.15*18   =24   avg weight=(50.25*16)+(45.15*8)/24=48.55   ANSWER 48.55
<result>B</result>
The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.