Question

the average of 8 number is 56 three of them are 49 57 and 72 find the average of the Other 5 number

Answer 1

Given the average of 8 numbers = 56.

Then the Total sum of 8 numbers = 56 * 8

                                                         = 448.


Sum of 1st three numbers = 49 + 57 + 72

                                            = 178.

So, the total = 448 - 178

                     = 270.

Average of the other 5 numbers = 270/5

                                                       = 54.


Verification:

178 + 270 = 448/8

                 = 56.


Hope this helps!

Answer 2

let the sum of number is x.
then x÷8=56
x=448
now remaining sum= 448-(49+57+72)
= 270
now avg. = 270÷5
= 54