Question

The mean weight of 25 students of a class is 28 kg . if the weight of the teacher is also included . the mean weight becomes 28.5 kg . Find the weight of the teacher ......... plzz give me answer​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Mean= (Sum of weight of all the students) / 25

i.e -

28×25 = Sum of weight of all the students. -----(1)

Now,

ATQ ..

weight of teacher=x kg (let)

[x+ (sum of weight of all the students)] / 26 = 28.5

(We put 26 because the mean of 25 students plus 1 teacher is given)

So, x= (28.5×26) - (28×25)

x= 741-700

x= 41 kg