Suppose selected comparative statement data for the giant bookseller Barnes & Noble are presented here. All balance sheet data are as of the end of the fiscal year (in millions). 2020 2019 Net sales $5,150 $5,100 3,000 3,701 75 191 65 102 Cost of goods sold Net income Accounts receivable Inventory Total assets Total common stockholders' equity 1.250 1,350 2.950 3.250 920 1,070 Compute the following ratios for 2020. (Round asset turnover to 2 decimal places, es 1.83 and all other answers to 1 decimal place, es. 1.8 or 2.5%) (a) Profit margin % (b) Asset turnover times (c) Return on assets (d) Return on common stockholders' equity % La Greenfit rate