Q1. A company manufactures two types of screws A and B. All the screws have to pass through a threading machine and a slotting machine. A box of type A screws requires 2 minutes on threading machine and 3 minutes on slotting machine. A box of type B screws requires 8 minutes on threading machine and 2 minutes on slotting machine. In a week, each machine is available for 60 hours. On selling these screws, the company gets a profit of Rs 100 per box on type A screws and Rs 170 per box on type B screws. How many boxes of screws of each type should be manufactured to get maximum profit. Form it as an L.P.P. and solve graphically using iso- profit/iso-cost method.
