7-18 The dean of the Western College of Business mustplan the school’s course offerings for the fall

7-18 The dean of the Western College of Business mustplan the school’s course offerings for the fall semester.Student demands make it necessary to offer atleast 30 undergraduate and 20 graduate courses inthe term. Faculty contracts also dictate that at least60 courses be offered in total. Each undergraduatecourse taught costs the college an average of $2,500in faculty wages, and each graduate course costs$3,000. How many undergraduate and graduatecourses should be taught in the fall so that total faculty salaries are kept to a minimum?