A decade ago, the average class size at Hillsboro Middle School was 20 students. Now it is 23 students. What is the percent of increase in the average class size?

Answer 1

To calculate the percent of increase in the average class size, we first need to find the difference between the current average class size and the previous average class size.

Difference = Current average class size - Previous average class size
Difference = 23 - 20
Difference = 3

Next, we need to calculate the percent of increase using the formula:

Percent Increase = (Difference / Previous average class size) * 100
Percent Increase = (3 / 20) * 100
Percent Increase = 0.15 * 100
Percent Increase = 15%

Therefore, the percent of increase in the average class size at Hillsboro Middle School is 15%.