An investment project has annual cash inflows of $4,000, $4,900, $6,100, and $5,300, for the next four years, respectively. The discount rate is 13 percent.

a.	What is the discounted payback period for these cash flows if the initial cost is $6,700? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)
b.	What is the discounted payback period for these cash flows if the initial cost is $8,800? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)
c.	What is the discounted payback period for these cash flows if the initial cost is $11,800? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

a.Discounted payback period:__?__ years

b.Discounted payback period:__?__ years

c.Discounted payback period:__?__years