ces An investment project costs $18,900 and has annual cash flows of $4,000 for six years. a. What is the discounted payback period if the discount rate is zero percent? Discounted payback period b. What is the discounted payback period if the discount rate is 4 percent? Discounted payback period c. What is the discounted payback period if the discount rate is 19 percent? Discounted payback period