What three numbers have an average of 505?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 505. This means if we add these three numbers together and divide by 3, we should get 505.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 505 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 505 * 3 = x + y + z
- So, the sum of our three numbers should be: 1515
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 1515.
Solution 1:
505, 505, 505
Verification:
(505 + 505 + 505) / 3 = 1515 / 3 ≈ 505
This solution is correct!
Solution 2:
505, 505, 505
Verification:
(505 + 505 + 505) / 3 = 1515 / 3 ≈ 505
This solution is correct!
Solution 3:
185, 1303, 27
Verification:
(185 + 1303 + 27) / 3 = 1515 / 3 ≈ 505
This solution is correct!
Solution 4:
1248, 157, 110
Verification:
(1248 + 157 + 110) / 3 = 1515 / 3 ≈ 505
This solution is correct!
Solution 5:
562, 552, 401
Verification:
(562 + 552 + 401) / 3 = 1515 / 3 ≈ 505
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 1515 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.