cost of capital is 14%, and its debt cost of captal is 6%. a. What is Rumolrs pretax weighted average cost of captal? b. If Rumolrs corporate tax rato is 28%, what is is attor-tax weighted avorage cost of capital? a. What is Rumoirs pretax weighted average cost of capla?? Rumoit's pretax weighted average cost of capital is 4. (Round to two decimal places ) b. If fumoits corporate tax rate is 26%, what is its ater-tax weighted averape cost of capical? Rumoits after-tax weighted average cost of captal is \%. (Round to two decimal places.)