What three numbers have an average of 691?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 691. This means if we add these three numbers together and divide by 3, we should get 691.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 691 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 691 * 3 = x + y + z
- So, the sum of our three numbers should be: 2073
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 2073.
Solution 1:
691, 691, 691
Verification:
(691 + 691 + 691) / 3 = 2073 / 3 ≈ 691
This solution is correct!
Solution 2:
691, 691, 691
Verification:
(691 + 691 + 691) / 3 = 2073 / 3 ≈ 691
This solution is correct!
Solution 3:
20, 554, 1499
Verification:
(20 + 554 + 1499) / 3 = 2073 / 3 ≈ 691
This solution is correct!
Solution 4:
1012, 964, 97
Verification:
(1012 + 964 + 97) / 3 = 2073 / 3 ≈ 691
This solution is correct!
Solution 5:
62, 760, 1251
Verification:
(62 + 760 + 1251) / 3 = 2073 / 3 ≈ 691
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 2073 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.