There are 40 children in a class in which boys are 4 more than girls.Average weight of all the students is 42.5 kg and averge weight of all girls is 48kg.Then find average weight of boys
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Step-by-step explanation:
Mum of girls x=18
Boys x+4=22
Sum of weights of all students
= 42.5*40
Sum of weights of girls 48*18
Sum of weights of boys is 836
Boys avg 836/22=38
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