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Rust Industrial Systems Company is trying to decide between two different conveyor belt systems. System A costs $340,000, has a 4 -year life, and requires $133,000 in pretax annual operating costs. System B costs $420,000, has a 6 -year life, and requires $127,000 in pretax annual operating costs. Both systems are to be depreciated straightline to zero over their lives and will have zero salvage value. Whichever project is chosen, it will not be replaced when it wears out. The tax rate is 25 percent and the discount rate is 10 percent. Calculate the NPV for both conveyor belt systems. (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) Answer is complete but not entirely correct