The following summarized data (amounts in millions) are taken from the September 30, 2017, and September 24, 2016, comparative financial statements of Apple Inc., a company that designs, manufactures, and markets mobile communication and media devices and personal computers; sells a variety of related software, services, accessories, networking solutions, and offers third-party digital content and applications: (Amounts Expressed in Millions) For the Final Years Ended September 30 and September 24, respectively 2017 2016 Net sales $ 229,234 $ 215,639 Costs of salen 114,048 131,376 Operating income 61,344 60,024 Net Income $ 48,351 $ 45,687 At Year End Assets Current assets: Cash and cash equivalents $ 20,289 $ 20,484 Short-term marketable securities 53,892 46,671 Accounts receivable, less allowance of 658 and 653, respectively 17,874 15,754 Inventories 4,855 2,132 Vendor nontrade receivables 17.799 13,545 Other current annet 13,936 8,283 Total current anseta 128,645 106,869 Long-term marketable securities 194,714 170,430 Property, plant, and equipment, net 33,783 27.010 Goodwili 5,712 5.414 Required intangible anseta, net 2,298 3,206 Other assets 10, 162 8,257 Total assets $275,319 S321,686 Liabilities and shareholders' Iquity Current liabilities Accounts payable $ 49,049 $ 37,294 Nccrued expenses 25, 744 22,027 Deferred revenue 7.548 8.000 Commercial paper 11,977 8,105 Current portion of long-term debt 6,496 3.500 Total current liabilities 100,814 79,006 Deferred revenue-noncurrent 2.836 2.930 Long-term debt 97.207 75,427 Other noncurrent liabilities 40415 36,074 Total liabilities 241, 272 193.432 Shareholders' Equity 100,814 2,836 97, 207 40, 415 241,272 79,006 2,930 75,427 36,074 193,437 Current portion of long-term debt Total current liabilities Deferred revenue-noncurrent Long-term debt Other noncurrent liabilities Total liabilities Shareholders' Equity: Common stock and additional paid-in capital, $0.00001 par value, 12,600,000 shares authorized; 5,126,201 and 5,336,166 shares issued and outstanding, respectively Retained earnings Accumulated other comprehensive income (loss) Total shareholders' equity Total liabilities and shareholders' equity 35,867 98,330 (150) 134,047 $ 375,319 31,251 96,364 634 128, 249 $ 321,686 At September 26, 2015, total assets were $290,345 and total shareholders' equity was $119,355. Required: a. Calculate Apple Inc.'s working capital, current ratio, and acid-test ratio at September 30, 2017, and September 24, 2016. b. Calculate Apple's ROE for the years ended September 30, 2017, and September 24, 2016. c. Calculate Apple's ROI, showing margin and turnover, for the years ended September 30, 2017, and September 24, 2016. Required A Required B Required C Calculate Apple Inc.'s working capital, current ratio, and (Round your ratio answers to 1 decimal place. Enter "Wo 2017 2016 Working capital Current ratio Acid-test ratio Complete this question by entering your answe Required A Required B Required C Calculate Apple's ROE for the years ended September place.) 2017 2016 ROE % % KO Required A ces Complete this question by entering your answers Required A Required B Requirad C Calculate Apple's ROI, showing margin and turnover, for (Round "Turnover" answers to 2 decimal places. Round y 2017 2016 % ROI Margin Turnover % %