Question 4. The Book Emporium buys books from two suppliers: OHaganBooks.com and JungleBooks.com. OHaganBooks.com offers packages of 5 mystery novels and 5 romance novels at $50 per package, and JungleBooks.com offers packages of 5 mystery novels and 10 romance novels at $150 per package. The Emporium needs to buy at least 2500 mystery novels and at least 3500 romance novels. For reasons too complicated to explain, at most 75% of the total number of packages must be from OHaganBooks.com.
Formulate the problem of deciding how many packages should the Emporium order from each supplier to satisfy the above requirements at the least possible cost?, and solve this linear program graphically.