Selected comparative statement data for Grouper Products Company are presented below. All balance sheet data are as of December 31. 2020 2019 Net sales $833,000 $722,000 Cost of goods sold 496,000 440,000 Interest expense 7.000 6,000 Net income 62,475 42,000 Accounts receivable 130,000 102.000 Inventory 87.000 73,000 Total assets 640,000 550,000 Total common stockholders' equity 465,000 315.000 Compute the following ratios for 2020: (Round answers to 1 decimal place, eg. 52.7.) (a) Profit margin. % (b) Asset turnover. times (c) Return on assets. (d) Return on common stockholders' equity