5.00 points Presented here are summarized data from the balance sheets and income statements of Wiper, Inc.: WIPER, INC. Condensed Balance Sheets December 31, 2017, 2016, 2015 (in millions) 2015 S 650 900 700 2,050 1.750 $3,400 $2,950 $2,450 S 500 S 800 700 800 1.400 950 $3,400 $2,950 $2.450 2017 2016 Current assets Other assets Total assets Current liabilities Long-term liabilities Stockholders' equity Total liabilities and stockholders' equity 2,750 1,500 1,000 1.150 WIPER, INC Selected Income Statement and Other Data For the year Ended December 31, 2017 and 2016 (in millions) 2017 2016 Income statement data: Sales Operating income Interest expense Net income $3,300 $2,900 300 70 230 380 80 300 Other data: Average number of common shares outstanding Total dividends paid 42 S 50 S 30 Required a. Calculate return on investment, based on net income and average total assets, for 2017 and 2016.(Do not round intermediate calculations. Round your answers to 1 decimal place.) 2017 2016 Return on investment b. Calculate return on equity for 2017 and 2016. (Round your answers to 1 decimal place.) 2017 2016 Return on equity c. Calculate working capital and the current ratio for each of the past three years. Enter your answers in millions i.e. 5,000,000 should be entered as 5). Round "Current ratio to 1 decimal place. 2017 2016 2015 Working capital Current ratio