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Baldock Inc. Is considering the acquisition of a new machine that costs $423,000 and has a useful life of 5 years with no salvage value. The incremental net operating income and incremental net cash flows that would be produced by the machine are: Assume cash flows occur uniformly throughout a year except for the initial investment. The payback period of this investment is closest to: 2.1 years 5.0 years 4.3 years 2.7 years