write at 7.7 4. Shadow corp. has no debt but can borrow percent. the firm's WACC is currently (9.5 percent and tax rate is 35 percent. Cost of equity ? convert to 20 percent debt, what is Cost of equity be a always 50%. the as above d. If the firm converts to 20 percent debt, be company wAce be ? the firm converts to so percent debt, 1 what will be company wAcc bez to The optimal capital structure has been achieved when the