What three numbers have an average of 315?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 315. This means if we add these three numbers together and divide by 3, we should get 315.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 315 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 315 * 3 = x + y + z
- So, the sum of our three numbers should be: 945
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 945.
Solution 1:
315, 315, 315
Verification:
(315 + 315 + 315) / 3 = 945 / 3 ≈ 315
This solution is correct!
Solution 2:
315, 315, 315
Verification:
(315 + 315 + 315) / 3 = 945 / 3 ≈ 315
This solution is correct!
Solution 3:
912, 30, 3
Verification:
(912 + 30 + 3) / 3 = 945 / 3 ≈ 315
This solution is correct!
Solution 4:
291, 226, 428
Verification:
(291 + 226 + 428) / 3 = 945 / 3 ≈ 315
This solution is correct!
Solution 5:
140, 212, 593
Verification:
(140 + 212 + 593) / 3 = 945 / 3 ≈ 315
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 945 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.