Current assets Other assets Total assets Condense DALBUM DRES December 31, 2020, 2019, 2018 (in millions) Current liabilities: Long-term liabilities Stockholders' equity Total liabilities and stockholders' equity 2020 $ 707 2019 $ 939 2018 $ 793 2,419 $3,126 1,926 $2,865 1,725 $2,518 $ 583 $ 836 $ 724 1,530 997 870 1,013 1,032 924 $3,126 $2,865 $2,518 WIPER INC. Selected Income Statement and Other Data For the year Ended December 31, 2020 and 2019 Income statement data: Sales Operating income Interest expense Net income (in millions). Other datas Average number of common shares outstanding. Total dividends paid Required: 2020 2019 $3,056 $2,919 302 316 90 71 209 204 41.9 $56.0 47.3 $ 52.9 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 14 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 parte. g. Calculate the dividend payout ratio for 2020. h. Assume that accounts receivable at December 31, 2020, totaled $315 million. Calculate the number of days' sales in receivables at that date. 1. 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.