The document defines and provides formulas for several common financial ratios used to analyze business performance, including: Current ratio - measures a business's ability to pay short-term debts with its current assets; Acid test ratio - like the current ratio but excludes stock to measure ability to pay debts without stock sales; Gross profit percentage - shows gross profit as a percentage of sales to evaluate costs of goods sold; Net profit percentage - calculates net profit as a percentage of sales to assess operating costs.