This document discusses the concepts of leverage, including operating leverage and financial leverage. It provides formulas to calculate the degree of operating leverage (DOL), degree of financial leverage (DFL), and degree of combined leverage (DCL). An example is given of a levered company where a 10% increase in sales would result in a 17.14% increase in operating income due to an DOL of 1.714, and a 10% increase in operating income would lead to a 15.56% increase in EPS due to a DFL of 1.556. The combined DCL is calculated as 2.667.