Question

The average weight of 17 students is 90 kg. If the weight of the teacher is also included, then the average weight is increased by 200 grams. Find the weight of the teacher?

a. 49 kgs

b. 48.7 kgs

c. 49.3 kgs

d. 55 kgs

e. None of these 62.

Answer 1

Answer:

Step-by-step explanation:

First, we will find out the weight of 17 students. To do that, we have to multiply student numbers and their average ages which gives us

Total Weight if  17 students is  = (17 x 90) = 1530 kg. = 1530000 grams

Teacher+student total age increases is = {1530000 + 200} = 1530200 gram

Which mean this 1530200grams is the weight of (17+1) = 18 persons.

Now, we have to calculate the weight of one person, by which we can calculate the weight of teacher.

So, the teacher's weight is = (1530200/18) = 85011 grams = 85 kg (Solved)

So the answer is: (e) none of these

Answer 2

Answer:

The Answer is None of these

Step-by-step explanation:

Average is 90 of 17 students. So sum becomes 90*17 = 1530Kg.

After teacher gets added the average increases by 200Gm. So, the sum becomes 90.2*18 = 1623.6Kg. So, if subtract 1623.6Kg from 1530Kg we get answer that is teachers weight  as 93.6. So correct answer is 93.6Kg