Answer:
2.82 years
Step-by-step explanation:
The payback is the length of time taken for the investment's cash inflows to equal the initial investment outlay.
In the first two years of the investment, $790,000($400,000+$390,000) would have been recouped out of the initial investment of $1,100,000.
The amount that is expected to be recovered in year 3 is $310,000 ($1,100,000-$790,000), based on that , we can compute our payback period thus:
payback period=2 years+(cash flow recovery in year 3/year cash 3 inflows)
payback period=2+($310,000/$380,000)
payback period=2.82 years