A group of students is taking a CPR course. The total cost for the course is $275. The room in which the course will be held can hold a maximum of 25 people, including the instructor. What is the minimum number of students needed to take the course so that the cost per student will be less than $15?
Let x be the number of students needed to take the course.
The cost per student can be represented by the equation:
275/x < 15
Solving for x, we have:
x > 275/15
x > 18.3333
Since the number of students must be a whole number, the minimum number of students needed to take the course so that the cost per student will be less than $15 is 19.