&. Problem 13.08 Problem 13-8 Hamada equation Cyclone Software Co. is trying to establish its optimal capital structure. Its current capital structure consists of 25% debt and 75% equity; however, the CEO believes the firm should use more debt. The risk-free rate, rRF is 6%; the market risk premium, RP is 7%; and the firm's tax ate is 40%. Currently, Cyclone's cost of equity is 15% which is determined by the CAPM. what ould be Cyclone's estimated cost of equity if it changed its capital structure to 50% debt and 50% equity? Round your answer to two decimal places