An investment project costs $14,400 and has annual cash flows of $3,300 for six years. Required : (a)What is the discounted payback period if the discount rate is zero percent? (b)What is the discounted payback period if the discount rate is 6 percent? (c) What is the discounted payback period if the discount rate is 21 percent? An investment project costs $14,400 and has annual cash flows of $3,300 for six years. Required : (a)What is the discounted payback period if the discount rate is zero percent? (b)What is the discounted payback period if the discount rate is 6 percent? (c) What is the discounted payback period if the discount rate is 21 percent