Question

4. The average weight of 10 students is 42 kg. When teachers weight is included in
them average increases by 2. Find weight of the teacher.
1) 60 kg
2) 44 kg
4) None of these.
B) 64 kg​

Answer 1

Answer:

Let the weight of 10 kg students be x.

Avg. wt = Total wt./No. of persons

total wt = x

10=x/42

x = 420 kg.

After adding wt of teacher

avg wt^ = 44

total wt = y

no of persons = 11

11=y/44

y= 484 kg

Weight of teacher = 484 - 420

64 kg Ans

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Answer 2

Answer:

I hope you are satisfied with this answer.