1. Profitability ratios help in the analysis of the combined impact of liquidity ratios, asset management ratios, and debt management ratios on the operating performance of a firm.

Your boss has asked you to calculate the profitability ratios of Petroxy Oil Co. and make comments on its second-year performance as compared with its first-year performance.

The following shows Petroxy Oil Co.'s income statement for the last two years. The company had assets of $9,400 million in the first year and $15,037 million in the second year. Common equity was equal to $5,000 million in the first year, and the company distributed 100% of its earnings out as dividends during the first and the second years. In addition, the firm did not issue new stock during either year.