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A paddy processing factory in Sekinchan has installed a new dryer for their paddy handling. Under a constant average drying condition, the dryer produces 1500 kg of 8% wet from a 50% wet rice in 6 hours. The critical moisture content of this material is 16%. In the market, the rice could be sold under 2 classes as follows Grade ! 11 Moisture Content 9% 5% Price/kg RM 0.50 RM 0.55 The plant must operate on a continuous 24 hour basis and spend RM 500 daily for heat, power, labor, fixed charges and others. The raw material cost RM 0.10 per kg received. a) determine the total drying time for grade I product and wet product daily production (5 marks) b) calculate the total drying time for grade Il product and wet product daily production [3 marks] c) Solve for total profit per day for both products and deduce which grade give the most sales [2 marks]