Question

36 Average weight of 10 men is decreased by 3 kg when one of them whose weight is 80 kg is replaced by a new person. The weight of the new person is. (a) 70 kg (b) 60 kg (c) 50kg (d) 73 kg​

Answer 1

Answer:

weight of new person = 50 kg

Step-by-step explanation:

Let x be the sum original wts of 1 persons

and y be the wt of new person

x/10 - (x -80 +y)/10 = 3

x -x +80 -y = 30

y = 50 kg