Water and Power Company (WPC) can borrow funds at an interest rate of 7,30% for a period of eight years. Its marginal federal-plus-state tax rate is 25%. WPC's after-tax cost of debt is (rounded to two decimal places). At the present time, Water and Power Company (WPC) has 20-year noncallable bonds with a face value of $1,000 that are outstanding. These bonds have a current market price of $1,382.73 per bond, carry a coupon rate of 13%, and distribute annual coupon payments. The company incurs federal-plus-state tax rate of 25%. If WPC wants to site new debt, what would be a reasonable estimate for its after-tax cost of debt (rounded to two decimal places? (Note: Round your YTM rate to two decimal place) 7.979 05.31 6.54% 5.98