Acetate Inc. has equity with a market value of $25 million and debt with a market value of $10 million. The firm's weighted average cost of captial is 15.8% and its pretax cost of debt is 10%. The firm is subject to a corporate tax rate of 35%. Assume no other imperfections in the financial market.
a. What is Acetate's cost of equity?
b. What is the cost of captial for an otherwise identical all-equity firm?
c. What would Acetate's weighted average cost of captial be if the firm borrows additional $5 million and uses the proceeds to repurchases shares?