Question

Find the average of 8 number if the average of the first 4 number is 20 and the average of the other 4 number is 28

Answer 1

Answer:

24

Step-by-step explanation:

Let's take the sum of first 4 numbers as x,

         and the sum of next 4 numbers as y.

Here it is given x/4 = 20,

                  and y/4 = 28.

By solving the above two equations for x and y we get the values as 80 and 112 respectively i.e., x = 80 & y = 112.

The average of 8 numbers will be the sum of those 8 numbers divided by 8

which is written as below,

(x + y) / 8 = (80 + 112) / 8

               = 192 / 8

               = 24. (Answer)