A firm manufactures two products, each of which must be processed through two departments, 1 and 2. The hourly requirements per unit for each product in each department, the weekly capacities in each department, selling price per unit, labour cost per unit, and raw mater cost per unit are summarized as follows: , Product A, Product B, Weekly capacity Department 1 Department 2 Selling price per unit Labour cost per unit Raw material cost per unit, 3 4 Rs. 25 Rs. 16 Rs. 4, 2 6 Rs. 30 Rs. 20 Rs. 4, 130 260 The problem is to determine the number of units to produce each product so as to maximize total contribution to profit. Formulate this as a LPP.