Response to the following problem:
The Oshkosh Travel Company is considering issuing additional debt. They wish to use the yield on their existing debt as a guide to the cost of new debt. They currently have a 5% coupon bond, paying interest semiannually, that matures in ten years and has a current market price of 80, or $800 per $1,000 face value bond. If Oshkosh's marginal tax rate is 30%, what is their expected cost of new debt?