There are 50 boys in a class. One boy weighing 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, fird the
weight of the new boy.
AJ 35 kg
B] 43 kg
C] 36 kg D] 30 kg
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Answer:weight of the new boy=35KG
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