Answer and Explanation:
a. The computation of the wacc is as followS;
= cost of common stock Ă— weight of common stock + cost of debt Ă— weight of debt Ă— (1 - tax rate)
= 0.16 Ă— 0.70 + 0.08 Ă— 0.30 Ă— (1 - 0.30)
= 0.112 + 0.0168
= 0.1288
= 12.88%
b. The after tax cost of debt is
= 0.08 Ă— (1- 0.30)
= 0.056
So the capital should use the cost of debt