Wildhorse sells books, movies, and magazines to a wide customer base. In a typical month, about 40% of its sales volume is from books, 40% from movies, and 20% from magazines. The selling price and cost information for each of these product categories is as follows. Books Movies Magazines Selling price Variable cost/unit $9 $16 $6 2 In addition, Wildhorse incurs facility and administrative costs that average $29,400 per month.