Using Apple Inc.s 2016 and 2015 Balance Sheet, Income Statement and Statement of cash flows, calculate the following and perform a comparative analysis between 2016 and 2015. (Please show step by step for both 2016 and 2015).

Liquidity Current ratio, acid ratio and operating cash flow ratio

Profitability Net profit margin, gross profit margin, return on assets, return on equity.

Debt Debt ratio, debt to equity ratio, debt to income ratio, cash flow to debt ratio and financial leverage.

Financial statements link

http://financials.morningstar.com/income-statement/is.html?t=AAPL®ion=usa&culture=en-US