What three numbers have an average of 787?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 787. This means if we add these three numbers together and divide by 3, we should get 787.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 787 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 787 * 3 = x + y + z
- So, the sum of our three numbers should be: 2361
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2361.
Solution 1:
787, 787, 787
Verification:
(787 + 787 + 787) / 3 = 2361 / 3 ≈ 787
This solution is correct!
Solution 2:
787, 787, 787
Verification:
(787 + 787 + 787) / 3 = 2361 / 3 ≈ 787
This solution is correct!
Solution 3:
664, 1001, 696
Verification:
(664 + 1001 + 696) / 3 = 2361 / 3 ≈ 787
This solution is correct!
Solution 4:
1302, 603, 456
Verification:
(1302 + 603 + 456) / 3 = 2361 / 3 ≈ 787
This solution is correct!
Solution 5:
265, 760, 1336
Verification:
(265 + 760 + 1336) / 3 = 2361 / 3 ≈ 787
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 2361 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.