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There are 50 boys in a class,one boy wei...

There are 50 boys in a class,one boy weighting 40 kg goes away and at the same time another boy joins the class. If the average weight of the class is thus decreased by 100 g, find the weight of the new boy?

A

32 kg

B

40 kg

C

35 kg

D

37 kg

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The correct Answer is:
C
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