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Find the weight of the boy who left the class?

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The Average weight of 50 boys in a class is 45kg.When one boy leaves the class,the average reduced by 100gm.Find the weight of the boy who left the class?

posted Jan 15, 2016 by anonymous

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1 Answer

+1 vote
 
Best answer

Avg weight =45kg
Avg weight reduced =100gm =0.1kg
New Avg. =45.0-0.1=44.9kg
Weight of boy left =new Avg. - no of old members x change in avg
=44.9-(50*0.1)
=44.9+5=49.9kg
Ans:weight of boy left is 49.9 kg

answer Jan 15, 2016 by Jaikumar Bhatia
Thanks sir



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