Use the cash flows and competitive spreads shown in the table below. 10 ($ millions) Year 0 Year 1 Year 21 Investment 170 Production (millions of pounds per 0 0 47 year) Spread ($ per pound) 1.02 1.02 1.02 1.02 Net revenues 0 47.94 88.74 Production costs 0 37.00 37.00 Transport 0 0 0 Other costs 0 27 27 27 Cash flow -170 -27 16.06 24.74 NPV (at r = 10%) = 0 Assume the dividend payout ratio each year is 100%. a. Calculate the year-by-year book and economic profitability for investment in polyzone production. Assume straight-line depreciation over 10 years and a cost of capital of 10%. (Negative answers should be indicated by a minus sign. Leave no cells blank - be certain to enter "0" wherever required. Do not round intermediate calculations. Enter your income answers in millions rounded to 2 decimal places and enter the rate of return as a percent rounded to 2 decimal places.) in (%) Answer is complete but not entirely correct. Book Book rate Economic Period income ($ income ($ of return in millions) millions) 0 (44.00 (25.88 (44.00 ) (33.06 (19.45 X (33.06 ) (27.96 (16.45 X (27.9612 (22.86 X (13.45 X (22.86 X (17.76 13.45 (17.76 (12.66 (10.56 X (12.66 (7.56 XI (4.45 X (7.56X (2.46 XL (1.45X (2.46 X 2.48x 1.55% 0.00% 107.74 4.55 0.00% 21 b-1. What is the economic rate of return? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) X Answer is complete but not entirely Economic rate of return (16.83 % b-2. Now compute the steady-state book rate of return (ROI) for a mature company producing polyzone. Assume no growth and competitive spreads. (Negative answers should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) ROI %