What three numbers have an average of 728?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 728. This means if we add these three numbers together and divide by 3, we should get 728.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 728 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 728 * 3 = x + y + z
- So, the sum of our three numbers should be: 2184
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2184.
Solution 1:
728, 728, 728
Verification:
(728 + 728 + 728) / 3 = 2184 / 3 ≈ 728
This solution is correct!
Solution 2:
728, 728, 728
Verification:
(728 + 728 + 728) / 3 = 2184 / 3 ≈ 728
This solution is correct!
Solution 3:
1063, 770, 351
Verification:
(1063 + 770 + 351) / 3 = 2184 / 3 ≈ 728
This solution is correct!
Solution 4:
1662, 162, 360
Verification:
(1662 + 162 + 360) / 3 = 2184 / 3 ≈ 728
This solution is correct!
Solution 5:
1229, 332, 623
Verification:
(1229 + 332 + 623) / 3 = 2184 / 3 ≈ 728
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 2184 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.