the average weight of 35 students in a school is 35kg .If a teachers weight is also added the average weight raised by 500grams .The weight of the teacher is how much
Answers
Answer:
The weight of the teacher is 53 kg
Step-by-step explanation:
Average = Sum of observations / No. of observations
Sum of observations = Average * No. of observations
Given:
Average weight of 35 students = 35 kg
=> Total weight of 35 students = 35*35 kg
=> Total weight of 35 students = 1225 kg ....(i)
We are given that if teacher's weight is added, the overall average increases by 500 gm, which is 0.5 kg.
Average weight of 35 students plus teacher = 35.5 kg
=> Total weight of 35 students plus teacher = (35.5 * 36) kg
[Including the teacher, there will be 36 observations]
=> Total weight of 35 students plus teacher = 1278 kg ....(ii)
Clearly,
(ii) - (i) will give us the weight of the teacher
=> Weight of teacher = (1278 - 1225) kg
= 53 kg
Answer: Weight of teacher = 53 kg
Answer:
53 kg
Step-by-step explanation:
Average = Sum of observations / No. of observations
Sum of observations = Average * No. of observations
Given:
Average weight of 35 students = 35 kg
=> Total weight of 35 students = 35*35 kg
=> Total weight of 35 students = 1225 kg ....(i)
We are given that if teacher's weight is added, the overall average increases by 500 gm, which is 0.5 kg.
Average weight of 35 students plus teacher = 35.5 kg
=> Total weight of 35 students plus teacher = (35.5 * 36) kg
[Including the teacher, there will be 36 observations]
=> Total weight of 35 students plus teacher = 1278 kg ....(ii)
Clearly,
(ii) - (i) will give us the weight of the teacher
=> Weight of teacher = (1278 - 1225) kg
= 53 kg
Answer: Weight of teacher = 53 kg