Question

The average weight of the students of two classes a nad b with 20 and 30 students respectively are 40 kg and 50kg respectively find average weight of the students in both the classes put together

Answer 1

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Answer 2

Let the weight of the students of class a be x kg and the weight of the students of class b be y.

According to the question:-


Average weight of class a = (sum of the weight)/(total no. of students)
=>40=x/20
=>x=800

Average weight of class b=( sum of the weight)/ (total no. of the students)
=>50=y/30
=>y=1500

Now, average weight of the students of both the classes together= (Sum of the weights)/(total no. of students)

=800+1500/20+30
=2300/50
=46 kg



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