Olsen Outfitters Inc, believes that its optimal capital structure consists of 55% common equity and 45% debs, and its tax rate is 25%. Oisen must raise additional capital to fund its upcoming expansion. The firm will have $1 milion of retained earnings with a cost of r1=10%, New common stock in an amount up to $5miltion would have a cost of rp=11.0%. Furthermore, Otsen can raise up to $3 million of debt at an interest rate of rd=10% and an additional $3 million of debt at rd=13%, The cFo estimates that a proposed expansion would require an investment of $6.0 million. What is the WACC for the last dollar raised to complete the expansion? Round your answer to two decimal places