What three numbers have an average of 406?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 406. This means if we add these three numbers together and divide by 3, we should get 406.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 406 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 406 * 3 = x + y + z
- So, the sum of our three numbers should be: 1218
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 1218.
Solution 1:
406, 406, 406
Verification:
(406 + 406 + 406) / 3 = 1218 / 3 ≈ 406
This solution is correct!
Solution 2:
406, 406, 406
Verification:
(406 + 406 + 406) / 3 = 1218 / 3 ≈ 406
This solution is correct!
Solution 3:
1075, 92, 51
Verification:
(1075 + 92 + 51) / 3 = 1218 / 3 ≈ 406
This solution is correct!
Solution 4:
1202, 5, 11
Verification:
(1202 + 5 + 11) / 3 = 1218 / 3 ≈ 406
This solution is correct!
Solution 5:
447, 677, 94
Verification:
(447 + 677 + 94) / 3 = 1218 / 3 ≈ 406
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 1218 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.