The average weight of A,B,C is
45 Kg. If the average weight
A and B is 40 Kg and that B and C is 43 Kg, then weight of
B is:
(A)17 (B) 20 (C) 26 (D) 31
Answers
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Correct option is D 31 kg
Explanation:-
Total weight of A, B, C = 45×3=135 kg
Total weight of A and B = 40×2=80 kg
Total weight of B and C = 43×2=86 kg
Weight of B = 80+86−135=31 kg
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