The dean of the Western College of Business must plan the school’s course offering for the upcoming fall semester. Student demands make it necessary to offer at least 30 undergraduate and 20 graduate classes in the term. Faculty contracts also dictate that at least 60 courses be offered in total. Each undergraduate class costs the college an average of $2,500 and each graduate class costs $3,000. How many of each should be taught in the fall to minimize total costs?
Solve this problem using the isocost line method