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?

Answer 1

Let the number of students be x.

The cost per student can be represented by the expression 275/x.

We want to find the minimum number of students needed so that the cost per student is less than $15. Therefore, we have the inequality:

275/x < 15

Solving for x:

x > 275/15
x > 18.33

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 is less than $15 is 19.