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Q.

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. 

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a

47.55 kg 

b

48 kg 

c

48.55 kg

d

49.25 kg  

answer is C.

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Detailed Solution

The average weight of 16 boys in a class is 50.25 kg 

The average of remaining 8 boys is 45.15 kg

The average weights of all the boys in the class 1650.25+845.1524=804+361.224=48.55

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