ToyCorp.is analyzing its optimal capital structure. Currently, Toys capital structure includes 10% debt and the company is planning to triple (3x) its debt capitalization. Assume that the current risk-free rate is 3.0% and the equity risk premium is 5.0%. If the company's cost of equity, which is based on the CAPM, is 12.0% and its tax rate is 40.00%, what would Toys estimated cost of equity (rounded) be if the company were to change its capital structure as indicated above? The answer is 13.6%, will you show the work?