What three numbers have an average of 11?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 11. This means if we add these three numbers together and divide by 3, we should get 11.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 11 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 11 * 3 = x + y + z
- So, the sum of our three numbers should be: 33
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 33.
Solution 1:
11, 11, 11
Verification:
(11 + 11 + 11) / 3 = 33 / 3 ≈ 11
This solution is correct!
Solution 2:
11, 11, 11
Verification:
(11 + 11 + 11) / 3 = 33 / 3 ≈ 11
This solution is correct!
Solution 3:
1, 10, 22
Verification:
(1 + 10 + 22) / 3 = 33 / 3 ≈ 11
This solution is correct!
Solution 4:
11, 13, 9
Verification:
(11 + 13 + 9) / 3 = 33 / 3 ≈ 11
This solution is correct!
Solution 5:
15, 17, 1
Verification:
(15 + 17 + 1) / 3 = 33 / 3 ≈ 11
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 33 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.