Question

Average weight of100 students is 46kg. average weights of all boys is 50 kg and average weight off all girls is 40 kg. find then no of boys.

Answer 1

Answer:

the number of boys is 60 and girls is 40

Step-by-step explanation:

60( number of boys)X 50(average weight + 40(number of girls) X 40( average weight) = 4600( total weight of students

4600(total weight of students) /100(number of students)=46

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