What three numbers have an average of 909?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 909. This means if we add these three numbers together and divide by 3, we should get 909.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 909 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 909 * 3 = x + y + z
- So, the sum of our three numbers should be: 2727
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2727.
Solution 1:
909, 909, 909
Verification:
(909 + 909 + 909) / 3 = 2727 / 3 ≈ 909
This solution is correct!
Solution 2:
909, 909, 909
Verification:
(909 + 909 + 909) / 3 = 2727 / 3 ≈ 909
This solution is correct!
Solution 3:
1329, 286, 1112
Verification:
(1329 + 286 + 1112) / 3 = 2727 / 3 ≈ 909
This solution is correct!
Solution 4:
1237, 698, 792
Verification:
(1237 + 698 + 792) / 3 = 2727 / 3 ≈ 909
This solution is correct!
Solution 5:
1727, 213, 787
Verification:
(1727 + 213 + 787) / 3 = 2727 / 3 ≈ 909
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 2727 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.