Question

The average weight of 5 boys is 48 kg and the average weight of 4 boys out of these is 47 kg. find the weight of the fifth boy

Answer 1

Answer:

let,

the five boys are A,B,C,D,E,F

average wait =48

therefore,

total wait of five boys =48×5=240.........(1)

and the average wait of four boys=47

therefore,

total wait of four boys=47×4=188........(2)

from eq. num.(1) and (2)

we get wait of fifth boy=240-188=52