What three numbers have an average of 84?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 84. This means if we add these three numbers together and divide by 3, we should get 84.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 84 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 84 * 3 = x + y + z
- So, the sum of our three numbers should be: 252
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 252.
Solution 1:
84, 84, 84
Verification:
(84 + 84 + 84) / 3 = 252 / 3 ≈ 84
This solution is correct!
Solution 2:
84, 84, 84
Verification:
(84 + 84 + 84) / 3 = 252 / 3 ≈ 84
This solution is correct!
Solution 3:
161, 50, 41
Verification:
(161 + 50 + 41) / 3 = 252 / 3 ≈ 84
This solution is correct!
Solution 4:
130, 36, 86
Verification:
(130 + 36 + 86) / 3 = 252 / 3 ≈ 84
This solution is correct!
Solution 5:
222, 14, 16
Verification:
(222 + 14 + 16) / 3 = 252 / 3 ≈ 84
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 252 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.