Calculate the Average: Finding Mean of 10, 5, and 15

To solve this problem, we'll follow these steps:

• Step 1: Identify the given numbers: 10, 5, and 15.
• Step 2: Apply the formula for the average.
• Step 3: Perform the calculation to find the average.

Now, let's work through each step:

Step 1: We have three numbers to consider: $10$, $5$, and $15$.

Step 2: To find the average, we use the formula:

$\text{Average} = \frac{\text{Sum of the numbers}}{\text{Number of numbers}}$

Step 3: Calculate the sum of the numbers:

$10 + 5 + 15 = 30$

Step 4: Divide the sum by the number of numbers:

The number of numbers is 3, so:

$\text{Average} = \frac{30}{3} = 10$

Therefore, the average of 10, 5, and 15 is $10$.