Average weight of 12 students and a teacher is 45 kg. If weight of the teacher is 66 kg, find average weight of 12 students?
Answers
Answered by
2
total weight = 13×45= 585
585-66= 519
avg of 12 student = 519/12
585-66= 519
avg of 12 student = 519/12
Answered by
3
The average weight of 12 students is 43.25kg.
Given :
Average weight of 12 students and a teacher = 45 kg.
weight of the teacher = 66 kg
To find :
average weight of 12 students
Solution :
Total weight of 12 students and the teacher = 45 x (12+1)
=45 x 13
=585 kg
Weight of 12 students except the teacher = (585-66)kg
= 519 kg
Therefore the average of weights of 12 students = total weight of 12 students / no. Of students
= 519 / 12
=43.25 kg
Hence, The average weight of 12 students is 43.25kg.
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