Maple Industries has 7 percent bonds outstanding that mature in thirteen years. The bonds pay interest semiannually and have a face value of $1,000. Currently, the bonds are selling for $1,021.16. "What is the firm's pre-tax cost of debt? a. 6.75 percent 1). 6.84 percent c. 6.91 percent (1. 7.03 percent e. 7.14 percent