6 a. What is the payback period (Be exact to 1 decimal place) of the cash flow below? 2300 2300 2100 1900 2100 1700 1900 1700 1500 1500 0 1 2 3 4 5 8 9 10 11 12 1800 2000 10000 6 b. A project has the following costs and benefits. What is the payback period (Be exact to 1 decimal place)? Year Cost Benefits 0 30,000 1-3 15,000 each year 12,000 each year 7,000 3,000 5-10 11,000 each year