The average weight of a, b and c is 45 kg. If the average weight of a – McqOptions

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1.	The average weight of a, b and c is 45 kg. If the average weight of a and b be 40 kg and that of b and c be 43 kg , then the weight of b is ____________
A.	21 kg
B.	20 kg
C.	31 kg
D.	17 kg
Answer» D. 17 kg

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