Sunland Medical Comparative Income Statement and Statement of Retained Earnings For the Year 2020 2019 Sales revenue (all on account) $10,177.250 $9.613,900 Cost of goods sold 5.612,700 5,298,700 Gross profit 4.564.550 4,315.200 Operating expenses 2,840,300 2,634,200 Net operating income 1,724.250 1,681,000 Interest expense 300,400 308.700 Net income before taxes 1,423.850 1,372,300 Income taxes (3086) 427.155 411,690 Net income $996.695 $960.610 Dividends paid Preferred dividends 29.550 29.550 Common dividends 433,350 413,050 Total dividends paid 462,900 442.600 Net income retained 533.845 518.010 Retained earnings, beginning of year 3.660,310 3,142,300 Retained earnings, end of year $4.194.155 $3,660,310 Calculate the following profitability ratios for 2020. (Round answers to 1 decimal place, e.g. 50.1%.) a. Gross margin percentage b. Return on assets Return on common stockholders' equitySunland Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow. Sunland Medical Comparative Balance Sheet As of December 31 2020 2019 Assets Current assets Cash $398,000 $417.450 Accounts receivable, net 1,099,000 776.450 Inventory 746,000 681,000 Other current assets 381,350 247,000 Total current assets 2.624,350 2.121,900 Property, plant, & equipment, net 8,645,055 8.440,010 Total assets $11,269,405 $10,561,910 Liabilities and Stockholders' Equity Current liabilities $3,209,000 $2.846.050 Long-term debt 3,702,600 3.892.700 Total liabilities 6,911,600 6.738,750 Preferred stock, $5 par value 59,000 59.000 Common stock, $0.25 par value 104,650 103.850 Retained earnings 4,194,155 3,660.310 Total stockholders' equity 4,357.805 3.823.160 Total liabilities and stockholders' equity $11,269,405 $10.561,910