AP12-1A (Common-size analysis and differences in profitability) Comparative financial statement data for First Ltd. and Supreme Ltd., two competitors, follow: First Ltd. Supreme Ltd. 2020 2019 2020 2019 Net sales $337,500 $1,950,000 Cost of goods sold 202,500 1,092,000 Operating expenses 68,250 468,000 Interest expense 3,375 37,800 Income tax expense 17,400 70,500 Current assets 165,000 $142,500 1,020,000 S 780,000 Capital assets (net) 420,000 367,500 1,530,000 1,425,000 Current liabilities 52,500 42,750 225,000 2,400,000 Long-term liabilities 67,500 95,250 630,000 540,000 Share capital 345,000 270,000 1,200,000 1,125,000 Retained earnings 20,000 102,000 495,000 300,000 Required a. Prepare a common-size analysis of the 2020 statement of income data for First Ltd. and Supreme Ltd. b. Calculate the return on assets and the return on shareholders' equity for both companies