Challenge Exercise 18-04 a-d Selected comparative statement data for Tyrone Company are presented below. All balance sheet data are as of December 31. 2020 2019 Net sales $1,117,500 $1,121,000 Cost of goods sold 708,000 639,000 Interest expense 14,000 10,000 Net income 156,450 140,000 Accounts receivable 142,000 120,000 98,000 Inventory 97,000 Total assets 780,000 710,000 Preferred stock (6%) 196,000 196,000 Total stockholders' equity 627,000 526,000 Compute the profit margin for 2020. (Round answer to 1 decimal place, e.g. 15.2%.) Profit margin 0% Compute the asset turnover for 2020. (Round answer to 1 decimal place, e.g. 15.2.) Asset turnover times Compute the return on assets for 2020. (Round answer to 1 decimal place, e.g. 15.2%.) Return on assets % Compute the return on common stockholders' equity for 2020. (Round answer to 1 decimal place, e.g. 15.2%.) Return on common stockholders' equity %