Calculate Average: Finding Mean of Three Numbers with Sum 10

To solve this problem, we need to find the average of three numbers that sum up to 10.

We will follow these steps:

• Step 1: Identify the sum of the numbers, which is given as 10.
• Step 2: Identify the number of terms, which in this case is 3.
• Step 3: Apply the average formula $\text{Average} = \frac{\text{Sum of numbers}}{n}$.

Now, let's perform the calculations:
Step 1: The sum of the three numbers is $10$.
Step 2: There are $3$ numbers to consider.
Step 3: Calculate the average:$\text{Average} = \frac{10}{3} = 3.3333\ldots$.

We can express $3.3333\ldots$ as a mixed number: $3\frac{1}{3}$.

Therefore, the average of three numbers that sum to 10 is $3\frac{1}{3}$.