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A manufacturer makes two products, each requiring time on three different machines. Each unit X1 of product 1 requires ve hours of machine 1, two-and-a-half hours on machine 2, and two hours on machine 3; each unit X2 of product 2 requires four hours on machine 1, two hours on machine 2, and three hours on machine 3. Machine 1 is available for 110 hours, Machine 2 for 55 and Machine 3, 65 hours. The unit prot on Products 1 and 2 are 150 pesos and 120 pesos, respectively. Required: . Determine the optimal combination of the products and optimal prot