Answer:
The correct option is the last one,6.8 years
Step-by-step explanation:
The payback period is the length of time it takes for an investor to realize the initial investment in a project,in simple terms, it is the time horizon wherein the project pays back the capital investment locked in it.
After the payback period,the project begins with return on investment phase,a phase where cash flows received are excess over and above the initial capital outlay.
Payback=initial investment/annual cash inflow
initial investment is $560,000
annual net cash flow is $82,000
payback period=$560,000/$82,000=6.8 years