What three numbers have an average of 255?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 255. This means if we add these three numbers together and divide by 3, we should get 255.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 255 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 255 * 3 = x + y + z
- So, the sum of our three numbers should be: 765
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 765.
Solution 1:
255, 255, 255
Verification:
(255 + 255 + 255) / 3 = 765 / 3 ≈ 255
This solution is correct!
Solution 2:
255, 255, 255
Verification:
(255 + 255 + 255) / 3 = 765 / 3 ≈ 255
This solution is correct!
Solution 3:
488, 192, 85
Verification:
(488 + 192 + 85) / 3 = 765 / 3 ≈ 255
This solution is correct!
Solution 4:
533, 158, 74
Verification:
(533 + 158 + 74) / 3 = 765 / 3 ≈ 255
This solution is correct!
Solution 5:
261, 29, 475
Verification:
(261 + 29 + 475) / 3 = 765 / 3 ≈ 255
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 765 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.