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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 :
Question

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 

Correct option is D


      

      

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