Question

How to solve mean of 5 number is 40 , mean of 4 is 46 , find 5 th number?

Answer 1

5th number is 16..
MEAN= TOTAL/NO. OF OBSERVATIONS
So 40x50=200.
46x4= 184.
Then subtract 184 from 200.
Thus answer is 16.

Answer 2

hey dear !!

let the sum of 4 numbers be x .


then , x/4 = 46

therefore, x= 184.

now ...let the 5th number be y .


then , 184 + y /5 = 40.

therefore, y = 16.

hence the 5th number Is 16.