Mathematics
Medium
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
✓ Official correct answer
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A
17 kg
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B
20 kg
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C
26 kg
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D
31 kg
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