An investment project has annual cash inflows of $6,400, $6,400, $7,200, and $8,500, and a discount rate of 14%. What is the discounted payback period for these cash flows if the initial cost is $8,550? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Discounted payback period years What is the discounted payback period for these cash flows if the initial cost is $12,255? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Discounted payback period years What is the discounted payback period for these cash flows if the initial cost is $15,960? (Do not round intermediate calculations. Round the final answer to 2 decimal places.) Discounted payback period years