What three numbers have an average of 396?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 396. This means if we add these three numbers together and divide by 3, we should get 396.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 396 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 396 * 3 = x + y + z
- So, the sum of our three numbers should be: 1188
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 1188.
Solution 1:
396, 396, 396
Verification:
(396 + 396 + 396) / 3 = 1188 / 3 ≈ 396
This solution is correct!
Solution 2:
396, 396, 396
Verification:
(396 + 396 + 396) / 3 = 1188 / 3 ≈ 396
This solution is correct!
Solution 3:
172, 711, 305
Verification:
(172 + 711 + 305) / 3 = 1188 / 3 ≈ 396
This solution is correct!
Solution 4:
410, 81, 697
Verification:
(410 + 81 + 697) / 3 = 1188 / 3 ≈ 396
This solution is correct!
Solution 5:
633, 409, 146
Verification:
(633 + 409 + 146) / 3 = 1188 / 3 ≈ 396
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 1188 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.