What is the average of 10, 20, and 30?

To find the average of the numbers 10, 20, and 30, you need to follow a simple formula: add all the numbers together and then divide by the total count of the numbers.

First, you sum the three numbers:

10 + 20 + 30 = 60.

Next, you count how many numbers there are. In this case, there are three numbers: 10, 20, and 30. Now, you divide the total sum by the number of values:

60 ÷ 3 = 20.

So, the average of 10, 20, and 30 is 20. This represents the central value of the dataset, equally distributing the total among the three values. Thus, the correct answer is 20.