1. The average weight of 100 students is 32 kg. The average weight of first 49 students is 30 kg and of last 50 students is 34 kg. What is the weight (in kg) of the 50th student?
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By: anil on 05 May 2019 01.46 am
Total weight of 100 students = $$100 imes 32$$ = Rs. 3200 kg Total weight of first 49 students = $$49 imes 30$$ = Rs. 1470 kg Total weight of last 50 students = $$50 imes 34$$ = Rs. 1700 kg $$ herefore$$ Weight of the 50th student = 3200 - (1470 + 1700) = 3200 - 3170 = 30 kg => Ans - (B)
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