Answer:
6.7 years
Step-by-step explanation:
Cost of machine = $589,000
Annual net cash flow = $88,000
Estimated cash payback period = Cost of machine / Annual net cash flow
Estimated cash payback period = $589,000 / $88,000
Estimated cash payback period = 6.693181818181818
Estimated cash payback period = 6.7 years