use Graphical method

Example: Product Mix Problem The N. Dustrious Company produces two products: I and II. The raw material requirements, space needed for storage, production rates, and selling prices for these products are given in Table 1. TABLE 1 Production Data for N. Dustrious Company Product 1 II Storage space (ft2/unit) Raw material (Ib/unit) Production rate (units/hr) Selling price ($/unit) 4 5 60 13 5 3 30 11 The total amount of raw material available per day for both products is 15751b. The total storage space for all products is 1500 ft?, and a at least of 7 units/hour per day can be used for production. The company wants to determine how many units of each product to produce per day to maximize its total income. 1