This document discusses ratio analysis and the DuPont system for analyzing financial statements. It defines ratio analysis and identifies common types of ratios including liquidity, activity, leverage, profitability, and market ratios. It then introduces the DuPont system, which breaks down return on equity into operating profit margin, asset turnover, and financial leverage. The document provides examples of key ratios within each category and discusses how ratios are used and viewed by managers, creditors, and board members. It also notes some limitations of ratio analysis.