What three numbers have an average of 664?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 664. This means if we add these three numbers together and divide by 3, we should get 664.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 664 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 664 * 3 = x + y + z
- So, the sum of our three numbers should be: 1992
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 1992.
Solution 1:
664, 664, 664
Verification:
(664 + 664 + 664) / 3 = 1992 / 3 ≈ 664
This solution is correct!
Solution 2:
664, 664, 664
Verification:
(664 + 664 + 664) / 3 = 1992 / 3 ≈ 664
This solution is correct!
Solution 3:
1057, 192, 743
Verification:
(1057 + 192 + 743) / 3 = 1992 / 3 ≈ 664
This solution is correct!
Solution 4:
357, 383, 1252
Verification:
(357 + 383 + 1252) / 3 = 1992 / 3 ≈ 664
This solution is correct!
Solution 5:
452, 987, 553
Verification:
(452 + 987 + 553) / 3 = 1992 / 3 ≈ 664
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 1992 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.