Answer:
6.35%
Step-by-step explanation:
Let us as a matter of preference determine the pretax cost of debt using the financial calculator approach as set out below:
N=40 (number of semiannual coupons in 20 years=20*2)
PMT=46.25 (semiannual coupon=face value*coupon rate*6/12=$1000*9.25%*6/12=$46.25 )
PV=-1075( current market price)
FV=1000( face value)
Lastly, enter CPT I/Y=4.23% (semiannual yield)
annual yield=pretax cost of debt=4.23% *2=8.46%
The after-tax cost of debt=8.46% *(1-25%)=6.35%
The after-tax cost of debt for use in WACC calculation=6.35%