What three numbers have an average of 135?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 135. This means if we add these three numbers together and divide by 3, we should get 135.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 135 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 135 * 3 = x + y + z
- So, the sum of our three numbers should be: 405
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 405.
Solution 1:
135, 135, 135
Verification:
(135 + 135 + 135) / 3 = 405 / 3 ≈ 135
This solution is correct!
Solution 2:
135, 135, 135
Verification:
(135 + 135 + 135) / 3 = 405 / 3 ≈ 135
This solution is correct!
Solution 3:
84, 170, 151
Verification:
(84 + 170 + 151) / 3 = 405 / 3 ≈ 135
This solution is correct!
Solution 4:
312, 74, 19
Verification:
(312 + 74 + 19) / 3 = 405 / 3 ≈ 135
This solution is correct!
Solution 5:
318, 11, 76
Verification:
(318 + 11 + 76) / 3 = 405 / 3 ≈ 135
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 405 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.