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Failsafe Electronics Corporation primarily manufactures four highly technical products, which it supplies to aerospace firms that hold NASA contracts. Each of the products must pass through the following departments before they are shipped: wiring, drilling, assembly, and inspection. The time requirements in each department (in hours) for each unit produced and its corresponding profit value are summarized in this table: The production time available in each department each month and the minimum monthly production requirement to fulfill contracts are as follows: The production manager has the responsibility of specifying production levels for each product for the coming month that maximizes their profit