What three numbers have an average of 68?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 68. This means if we add these three numbers together and divide by 3, we should get 68.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 68 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 68 * 3 = x + y + z
- So, the sum of our three numbers should be: 204
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 204.
Solution 1:
68, 68, 68
Verification:
(68 + 68 + 68) / 3 = 204 / 3 ≈ 68
This solution is correct!
Solution 2:
68, 68, 68
Verification:
(68 + 68 + 68) / 3 = 204 / 3 ≈ 68
This solution is correct!
Solution 3:
171, 22, 11
Verification:
(171 + 22 + 11) / 3 = 204 / 3 ≈ 68
This solution is correct!
Solution 4:
27, 89, 88
Verification:
(27 + 89 + 88) / 3 = 204 / 3 ≈ 68
This solution is correct!
Solution 5:
40, 46, 118
Verification:
(40 + 46 + 118) / 3 = 204 / 3 ≈ 68
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 204 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.