Black Hill Inc. sells $100 million worth of 27 -year to maturity 10.81% annual coupon bonds. The net proceeds (proceeds after flotation costs) are $975 for each $1,000 bond. What is the before-tax cost of capital for this debt financing? Round the answer to two decimal places in percentage form. (Write the percentage sign in the "units" box) You should use Excel or financial calculator: Your Answer: Answer units