The average weight of A, B and C is 45 kg. If the average weight ...

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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. 17 kg

B. 20 kg

C. 26 kg

D. 31 kg

Answer & Explanation

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