W Chapter 24 3 flows LO P1 Exercise 24-5 Payback period computation; even cash period for each of these two separate ents: he system yields for an existing machine is expected to cost sdepreciation. The predicted salvage value of $520,000 and have a useful life of six years. T an incremental after-tax income of $ the system is $10,000 150,000 each -tax income of b. A machine costs $380,000, has a $20,000 salvage value, is expected to last eight years, and will generate an after period