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While calculating the weight of a group of men, the weight of 63 kg of one of the member was mistakenly written as 83 kg. Due to this the average of the weights increased by half kg. What is the number of men in the group?
25
20
40
60
Increase in marks lead to increase in average by ½ So (83-63) = x/2 x = 40
By: Sandeep Dubey ProfileResourcesReport error
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