Answer:
7.1
Explanation:
Interest rate = Coupon payment / Face value
8% semi annually will be 16% = 160 / 1000
At 90% of par, loan interest = 160 / 900
= 18% or 9% semi annually
Therefore the after tax cost of debt which is given by kd(1-t) = 9% (1 – 0.21)
Cost of debt = 7.1% or 7.1