What three numbers have an average of 810?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 810. This means if we add these three numbers together and divide by 3, we should get 810.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 810 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 810 * 3 = x + y + z
- So, the sum of our three numbers should be: 2430
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2430.
Solution 1:
810, 810, 810
Verification:
(810 + 810 + 810) / 3 = 2430 / 3 ≈ 810
This solution is correct!
Solution 2:
810, 810, 810
Verification:
(810 + 810 + 810) / 3 = 2430 / 3 ≈ 810
This solution is correct!
Solution 3:
540, 1881, 9
Verification:
(540 + 1881 + 9) / 3 = 2430 / 3 ≈ 810
This solution is correct!
Solution 4:
1287, 932, 211
Verification:
(1287 + 932 + 211) / 3 = 2430 / 3 ≈ 810
This solution is correct!
Solution 5:
66, 711, 1653
Verification:
(66 + 711 + 1653) / 3 = 2430 / 3 ≈ 810
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 2430 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.