What three numbers have an average of 279?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 279. This means if we add these three numbers together and divide by 3, we should get 279.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 279 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 279 * 3 = x + y + z
- So, the sum of our three numbers should be: 837
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 837.
Solution 1:
279, 279, 279
Verification:
(279 + 279 + 279) / 3 = 837 / 3 ≈ 279
This solution is correct!
Solution 2:
279, 279, 279
Verification:
(279 + 279 + 279) / 3 = 837 / 3 ≈ 279
This solution is correct!
Solution 3:
563, 95, 179
Verification:
(563 + 95 + 179) / 3 = 837 / 3 ≈ 279
This solution is correct!
Solution 4:
775, 5, 57
Verification:
(775 + 5 + 57) / 3 = 837 / 3 ≈ 279
This solution is correct!
Solution 5:
268, 70, 499
Verification:
(268 + 70 + 499) / 3 = 837 / 3 ≈ 279
This solution is correct!
Explanation:
As you can see, there are many possible solutions. We can find more by:
- Choosing any two numbers
- Subtracting their sum from 837 to get the third number
Remember:
- The numbers don't have to be whole numbers.
- They can even be negative (although that might not make sense in some real-world contexts).
- The order of the numbers doesn't matter for the average.