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 $4,750 $5,501 3,300 3,701 Cost of goods sold Net income Accounts receivable 85 75 1,150 2,850 110 102 1,250 3,250 Inventory Total assets Total common stockholders' equity 900 1,121 Compute the following ratios for 2020. (Round asset turnover to 2 decimal places, eg 1.83 and all other answers to 1 decimal place, e.g. 1.8 or 2.5%) (a) Profit margin (b) Asset turnover times (c) Return on assets (d) Return on common stockholders' equity (e) Gross profit rate