Question

nine numbers are written in ascending order.the middle number is the average of nine number the average of the five largest numbers is 68 and that of five smallest number is 44 what is the sum of all nine numbers ​

Answer 1

middle is average

sum/9=×

9x/9=×

average of top 5=68

5x+10 /5 =68

5x +10 = 340

5x =330

x =66

answer = sum = 9×66=594

Answer 2

The sum of all nine numbers is 504.

Step-by-step explanation:

Let the average of all the 9 numbers = x

The average of the five largest numbers = 68

total of five largest numbers = 68 × 5 = 340

The average of the five smallest numbers = 44

total of five smallest numbers = 44 × 5 = 220

As x is average

10x = 340 + 220

10x = 560

x = 56

Sum of all numbers = 56 × 9 = 504

The sum of all nine numbers is 504.

                       

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