Final answer:
To find the average of the remaining five numbers in the list, subtract the sum of the three numbers from the sum of all eight numbers and then divide the result by 5.
Step-by-step explanation:
The question asks for the average of the remaining five numbers in the list, given that the average of the eight numbers is -5 and the sum of three of the numbers is 6.
To find the sum of the remaining five numbers, we need to subtract the sum of the three numbers (6) from the sum of all eight numbers (-5 * 8 = -40). Therefore, the sum of the remaining five numbers is -46 (i.e., -40 - 6).
To find the average of the remaining five numbers, we divide the sum (-46) by the number of numbers (5). The average is -9 (i.e., -46 ÷ 5).