The electrotech corporation manufactures two industrial-sized electrical devices: generators and alternators. both of these products require wiring and testing during the assembly process. each generator requires 2 hours of wiring and 1 hour of testing and can be sold for a $250 profit. each alternator requires 3 hours of wiring and 2 hours of testing and can be sold for a $150 profit. there are 260 hours of wiring time and 140 hours of testing time available in the next production period, and electrotech wants to maximize profit. formulate a linear programming model for this problem