Enrollment in a course grows from 320 students to 400 students. What is the percent increase? Enter the number of percent.
Ճիշտ պատասխան
25
Բացատրություն
The increase is 400 - 320 = 80 students, and 80 / 320 x 100 = 25%. Dividing by the new enrollment gives 20%, which uses the wrong base for measuring the change.