6. Chapter Problem 10.10 (WACC), Section Problem 10.10 (WACC), Problem Problem 10.10 (WACC) eBook Olsen Outfitters Inc. believes that its optimal capital structure consists of 50% common equity and 50% debt, and its tax rate is 25%. Olsen must raise additional capital to fund its upcoming expansion. The firm will have $1 million of retained earnings with a cost of r. - 13%. New common stock in an amount up to $7 million would have a cost of ro - 14.5%. Furthermore, Olsen can raise up to $4 million of debt at an Interest rate ofre -10% and an additional $5 million of debt at fa- 13%. The CFO estimates that a proposed expansion would require an investment of $3.0 million. What is the WACC for the last dollar ralsed to complete the expansion? Round your answer to two decimal places