An investment project provides cash inflows of $675 per year for eight years. a. What is the project payback period if the initial cost is $1,500? (Enter 0 if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.)

b. What is the project payback period if the initial cost is $3,400? (Enter 0 if the project never pays back. Round your answer to 2 decimal places, e.g., 32.16.)