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first year and $42,000 during the second ju. would be the equivalent net savings per machine hour? 6.24 You just purchased a pin-inserting machine to relieve some bottleneck problems that have been created in manufacturing a PC board. The machine cost $56,000 and has an estimated service life of five years. At that time, the estimated salvage value would be $5,000. The machine is expected to operate 2,500 hours per year. The ex- pected annual operating and maintenance cost would be $6,000. If your firm's inter- est rate is 15%, what would be the machine cost (owning and operating) per hour