Situational Software Co. (SSC) is trying to establish its optimal capital structure. Its current capital structure consists of 30% debt and 70% equity; however, the CEO believes that the firm should use more debt. The risk-free rate, n, is 6%; the market risk premlum, RPM, is 5%; and the firm's tax rate is 40%. Currently, 5SC s cost of equity is 16%, which is determined by the CAPM. What would be 55C 's estimated cost of equity if it changed its capital structure to 50% debt and 50% equity? Do not round intermediate calculations. Round your answer to two decimal ploces