What three numbers have an average of 225?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 225. This means if we add these three numbers together and divide by 3, we should get 225.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 225 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 225 * 3 = x + y + z
- So, the sum of our three numbers should be: 675
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 675.
Solution 1:
225, 225, 225
Verification:
(225 + 225 + 225) / 3 = 675 / 3 ≈ 225
This solution is correct!
Solution 2:
225, 225, 225
Verification:
(225 + 225 + 225) / 3 = 675 / 3 ≈ 225
This solution is correct!
Solution 3:
29, 613, 33
Verification:
(29 + 613 + 33) / 3 = 675 / 3 ≈ 225
This solution is correct!
Solution 4:
606, 12, 57
Verification:
(606 + 12 + 57) / 3 = 675 / 3 ≈ 225
This solution is correct!
Solution 5:
354, 221, 100
Verification:
(354 + 221 + 100) / 3 = 675 / 3 ≈ 225
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 675 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.