Finding ratios for 3 problems (Finance of Business)

Find the industry ratios for the company using the Dun & Bradstreet^®  (Ratio Guide attached)

Assume the inventory ratio is based on a traditional inventory system, but globalized markets and the supply chain make it critical to adopt lean principles to create a more efficient system.

Calculate the 3 ratios below (show your calculations) for the company, Boeing, using the two most recent annual financial statements. Be careful not to use quarterly information, and include ratios for both years, 2013 & 2014.

1- Return on Sales (%)

2- Return on assets (%)

3- Return on net worth (%)