Question

The mean of five numbers is 56. If one of the numbers is excluded, the mean of the numbers
is reduced by 4. What is the excluded number?

Answer 1

Answer:

72

Step-by-step explanation:

Mean of 5 numbers = 56

Let a+b+c+d+e=x ; a+b+c+d=y

Mean = x/5=56

x=280

If one number is reduced mean reduces by 4

Mean = y/4=(56-4)

y/4=52

y=208

Excluded number= x-y= 280-208= 72