Algebra 1, finding average

Question

the sum of four numbers is 411.6. two of the numbers are 20.4 and 270.5. find the average of the four numbers.

Answer 1

Since we are already given the sum of the four numbers, we just need to divide that sum by 4, so 411.6/4 = 102.9 is the average. The given values of two of the numbers are hence irrelevant.

Hope this helped!

Answer 2

Given information:

1. Sum of four numbers = 411.6
2. Two of the numbers are 20.4 and 270.5

Solution:

The average of four numbers = (Sum of four numbers) ÷ 4

Average = 411.6 ÷ 4 = 102.9

Note: I don't actually need to find the other two numbers to calculate the average. The average depends only on the sum and the count of numbers.