What three numbers have an average of 408?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 408. This means if we add these three numbers together and divide by 3, we should get 408.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 408 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 408 * 3 = x + y + z
- So, the sum of our three numbers should be: 1224
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 1224.
Solution 1:
408, 408, 408
Verification:
(408 + 408 + 408) / 3 = 1224 / 3 ≈ 408
This solution is correct!
Solution 2:
408, 408, 408
Verification:
(408 + 408 + 408) / 3 = 1224 / 3 ≈ 408
This solution is correct!
Solution 3:
12, 283, 929
Verification:
(12 + 283 + 929) / 3 = 1224 / 3 ≈ 408
This solution is correct!
Solution 4:
93, 692, 439
Verification:
(93 + 692 + 439) / 3 = 1224 / 3 ≈ 408
This solution is correct!
Solution 5:
801, 384, 39
Verification:
(801 + 384 + 39) / 3 = 1224 / 3 ≈ 408
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 1224 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.