WIPER INC. Condensed Balance Sheets December 31, 2020, 2019, 2018 (in millions) 2020 Current assets $ 788 Other assets 2,427 Total assets $3,215 Current liabilities $ 591 Long-term liabilities 1,603 Stockholders' equity 1,021 Total liabilities and stockholders' equity $3,215 2019 $1,011 1,934 $2,945 $ 844 1,061 1,040 $2,945 2018 $ 873 1,733 $2,606 $ 737 937 932 $2,606 2019 WIPER INC. Selected Income Statement and Other Data For the year Ended December 31, 2020 and 2019 (in millions) 2020 Income statement data: Sales Operating income 310 Interest expense 98 Net income 233 Other data: Average number of common shares outstanding 42.7 Total dividends paid $ 64.0 13,064 $2,927 324 79 228 48.1 $ 53.7 Required: a. Calculate return on investment, based on net income and average total assets, for 2020 and 2019. b. Calculate return on equity for 2020 and 2019. c. Calculate working capital and the current ratio for each of the past three years. d. Calculate earnings per share for 2020 and 2019. e. If Wiper's stock had a price/earnings ratio of 10 at the end of 2020, what was the market price of the stock? f. Calculate the cash dividend per share for 2020 and the dividend yield based on the market price calculated in part e. g. Calculate the dividend payout ratio for 2020. h. Assume that accounts receivable at December 31, 2020, totaled $323 million. Calculate the number of days' sales in receivables at that date. i. Calculate Wiper's debt ratio and debt/equity ratio at December 31, 2020 and 2019. j. Calculate the times interest earned ratio for 2020 and 2019