What three numbers have an average of 169?
Part 1: Understanding the Problem
We're looking for three numbers whose average is 169. This means if we add these three numbers together and divide by 3, we should get 169.
Step-by-step Solution:
- Recall the average formula: Average = (Sum of numbers) / (Count of numbers)
- In this case: 169 = (x + y + z) / 3
- To find the sum, multiply both sides by 3: 169 * 3 = x + y + z
- So, the sum of our three numbers should be: 507
Part 2: Finding Solutions
Now, let's find multiple sets of three numbers that add up to 507.
Solution 1:
169, 169, 169
Verification:
(169 + 169 + 169) / 3 = 507 / 3 ≈ 169
This solution is correct!
Solution 2:
169, 169, 169
Verification:
(169 + 169 + 169) / 3 = 507 / 3 ≈ 169
This solution is correct!
Solution 3:
480, 12, 15
Verification:
(480 + 12 + 15) / 3 = 507 / 3 ≈ 169
This solution is correct!
Solution 4:
9, 172, 326
Verification:
(9 + 172 + 326) / 3 = 507 / 3 ≈ 169
This solution is correct!
Solution 5:
70, 251, 186
Verification:
(70 + 251 + 186) / 3 = 507 / 3 ≈ 169
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 507 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.