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Average - General Aptitude

Q1:

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.

A 47.55 kg

B 48 kg

C 48.55 kg

D 49.25 kg

ANS:C - 48.55 kg

Required average
= 50.25 x 16 + 45.15 x 8
16 + 8
 
= 804 + 361.20
24
 
= 1165.20
24
  = 48.55