The average weight of a kid in group of 10 is 35 kilograms when Sonu also joined them. The average become 36 kilograms how much does Sonu weight
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Number of students=10 Average weight of the group=35 Total weight of the group=10*35=350 Now, when Sonu joins the group- Number of students=10+1=11 Average weight of the group=36 Total weight of the group=11*36=396 Change in total weight of the group=396-350=46 So, Sonu's weight is 46Kg
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