What three numbers have an average of 27?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 27. This means if we add these three numbers together and divide by 3, we should get 27.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 27 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 27 * 3 = x + y + z
- So, the sum of our three numbers should be: 81
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 81.
Solution 1:
27, 27, 27
Verification:
(27 + 27 + 27) / 3 = 81 / 3 ≈ 27
This solution is correct!
Solution 2:
27, 27, 27
Verification:
(27 + 27 + 27) / 3 = 81 / 3 ≈ 27
This solution is correct!
Solution 3:
5, 65, 11
Verification:
(5 + 65 + 11) / 3 = 81 / 3 ≈ 27
This solution is correct!
Solution 4:
9, 41, 31
Verification:
(9 + 41 + 31) / 3 = 81 / 3 ≈ 27
This solution is correct!
Solution 5:
22, 16, 43
Verification:
(22 + 16 + 43) / 3 = 81 / 3 ≈ 27
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 81 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.