11. Dannenfelser Design works with clients in three major project categories: architecture, interior design, and combined. Each type of project requires an estimated number of hours for different categories of employees, as shown in the table.

Architecture Interior Design Combined Hourly Rate Principal 15 5 18 $150 Sr. designer 25 35 40 $110 Drafter 40 30 60 $75 Administrator 5 5 8 $50 In the coming planning period, 184 hours of principal time, 414 hours of senior designer time, 588 hours of drafter time, and 72 hours of administrator time are available. Profit per project averages $1,290 for architecture, $1,110 for interior design, and $1,878 for combined projects. The firm would like to work on at least one of each type of project for exposure among clients. Assuming that the firm has more demand than they can possibly handle, find the best mix of projects to maximize profit.