Mr. MacGregor's Shop makes bookcases and desks. Each bookcase requires 5 hours of woodworking and 4 hours of finishing. Each desk requires 10 hours of woodworking and 3 hours of finishing. Each month the shop has 600 hours of labor available for woodworking and 250 hours for the finishing. The profit on each bookcase is $40 and each des is $75. How many of each product should be made each month in order to maximize to profit?