Question

The average weight of 10 students increases by 3.5 kg when a teacher comes in place of one them weighing 65 kg. What might be the weight of the teacher? Select one: a. 100 kg b. 120 kg c. 150 kg d. 110 kg

Answer 1

Answer:

100 kg

Step-by-step explanation:

The increased weight is = 3.5×10= 35 kg

So, the weight of the teacher = 65+35= 100kg

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Answer 2

Option 'a' is correct.

Step-by-step explanation:

Since we have given that

Number of students = 10

Average increased by 3.5 kg when a teacher comes in place of one them

Weight of that student = 65 kg

We need to find the weight of teacher.

According to question,

Weight of student is given by

$10\times 3.5+65\\\\=35+65\\\\=100\ kg$

Hence, the weight of teacher is 100kg.

Hence, Option 'a' is correct.

# learn more:

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?

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