Cullumber Medical manufactures hospital beds and other institutional furniture. The company's comparative balance sheet and income statement for 2019 and 2020 follow. Cullumber Medical Comparative Balance Sheet As of December 31 2020 2019 Assets Current assets Cash $400,000 $417,600 Accounts receivable, net 1,056,000 776,400 Inventory 721,000 681,050 Other current assets 381,300 247,050 Total current assets 2,558,300 2,122,100 Property, plant, & equipment, net 8,710,235 8,439,930 Total assets $11,268,535 $10,562,030 Liabilities and Stockholders' Equity Current liabilities $3,208,000 $2,846,000 Long-term debt 3,702,700 3,892,650 Total liabilities 6,910,700 6,738,650 Preferred stock, $5 par value 59,000 59,000 Common stock, $0.25 par value 104,700 103,900 Retained earnings 4,194,135 3,660,480 Total stockholders' equity 4,357,835 3,823,380 Total liabilities and stockholders' equity $11,268,535 $10,562.030 Cullumber Medical Comparative Income Statement and Statement of Retained Earnings For the Year 2020 2019 Sales revenue (all on account) $10,177,300 $9,613,900 Cost of goods sold 5,613,000 5,298,700 Gross profit 4,564,300 4,315,200 Operating expenses 2,840,250 2,634,200 Net operating income 1,724,050 1,681,000 300,400 308,600 1,423,650 1,372,400 Interest expense Net income before taxes Income taxes (30%) Net income 427,095 411,720 $996,555 $960,680 Dividends paid Preferred dividends Common dividends 29,550 29,500 433,350 413,100 462,900 442,600 Total dividends paid Net income retained Retained earnings, beginning of year 533,655 518,080 3,660,480 3,142,400 Retained earnings, end of year $4,194,135 $3,660,480 Calculate the following liquidity ratios for 2020. (If working capital is negative then enter with a negative sign preceding the number or parentheses, e.g.-15,000 or (15,000). Round all answers except working capital to 2 decimal places, e.g. 2.55.) a. Working capital b. Current ratio Acid-test ratio d. Accounts receivable turnover times