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Exercise 11-5 Payback period computation; even cash flows LO P1 Compute the payback period for each of these two separate investments: a. A new operating system for an existing machine is expected to cost $290,000 and have a useful life of four years. The system yields an incremental after-tax income of $83,653 each year after deducting its straight-line depreciation. The predicted salvage value of the system is $11,000. b. A machine costs $200,000, has a $15,000 salvage value, is expected to last ten years, and will generate an after-tax income of $46,000 per year after straight-line depreciation. Payback Period Choose Numerator: 7 Choose Denominator: = Payback Period Payback period