The average
Weidth of
A, B, and C is 45 kg, if the
average of A and b B be 40 kg and that of B and C be 43kg what is the weight of B
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Answer:
Total weight of ABC is 45×3= 135kg
Total weight of AB is 40×2=80kg
Total weight of BC is 43 × 2=86kg
weight of B =80+86-135=31kg
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answer is 31 kg....
use formula of average mean
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