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Average weight of a class of 30 students is 40 kg.if the teacher is included then the average is 41 kg.What is the weight of the teacher?
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Answered by
4
Answer:
The total weight of 40 students = 40×40 = 1600 kgs.
The total weight of 40 students + teacher = 41×41 = 1681 kgs.
The weight of the teacher = 1681 - 1600 = 81 kgs.
Answered by
0
The weight of the teacher is 71 kg.
Step-by-step explanation:
Given:
Average weight of 30 students= 40 kg
Average Weight of 31 people including teacher= 41kg
Solution:
The total weight of all the students= Average weight× number of students
= 40×30 = 1200 kg
Now, the total weight of 31 people including the teacher= average weight × 31
= 41× 31= 1271 kg
Thus, the weight of teacher= total weight of 31 people- total weight of 30 people
= 1271-1200
Weight of the teacher= 71 kg
Result:
Thus, the weight of the teacher is 71 kg.
(#SPJ3)
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