This document discusses profitability ratios and their calculation. It defines profitability ratios as ratios that indicate a business's profit earning capacity. Profitability ratios are classified into general ratios like gross profit ratio and overall ratios like return on total assets. The document provides examples of common profitability ratios like net profit margin, return on assets, earnings per share and dividend per share. It then shows a sample calculation of gross profit ratio, net profit margin, operating profit margin and return on total assets for a company using example financial figures. Finally, it lists advantages and disadvantages of using ratio analysis.