Question

There are 50 boys in a class. Their average weight is
45 kg. When one boy leaves the class, the average
reduces by 100 g. Find the weight of the boy who left
the class.
1) 40.9 kg 2) 42.9 kg 3) 49.9 kg
4) 39.9 kg 5) None of these​

Answer 1

Answer:

49.9kg(3) option

Step-by-step explanation:

according to question...

The average weight of 50 students was = 45 kg

when one student leaves the class the avg. reduced by 100 gm

∴Total weight reduction due to 49 students = 49×100=4900 gm=4.9 kg

∴The weight of student who left = 45 + 4.9 = 49.9 kg.

hope this help u...

Answer 2

Answer:

the above answer is right