What three numbers have an average of 865?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 865. This means if we add these three numbers together and divide by 3, we should get 865.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 865 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 865 * 3 = x + y + z
- So, the sum of our three numbers should be: 2595
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2595.
Solution 1:
865, 865, 865
Verification:
(865 + 865 + 865) / 3 = 2595 / 3 ≈ 865
This solution is correct!
Solution 2:
865, 865, 865
Verification:
(865 + 865 + 865) / 3 = 2595 / 3 ≈ 865
This solution is correct!
Solution 3:
39, 731, 1825
Verification:
(39 + 731 + 1825) / 3 = 2595 / 3 ≈ 865
This solution is correct!
Solution 4:
1686, 424, 485
Verification:
(1686 + 424 + 485) / 3 = 2595 / 3 ≈ 865
This solution is correct!
Solution 5:
2207, 39, 349
Verification:
(2207 + 39 + 349) / 3 = 2595 / 3 ≈ 865
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 2595 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.