Answer:
a. 8.41%
b. 4.62%
Explanation:
The computations are presented below:
a. Company's WACC:
= Weightage of debt × cost of debt × ( 1- tax rate) + (Weightage of preferred stock) × (cost of preferred stock) + (Weightage of common stock) × (cost of common stock)
= (0.25 × 6%) × ( 1 - 23%) + (0.05 × 5%) + (0.70 × 10%)
= 1.155% + 0. 25% + 7%
= 8.41%
b. After tax cost of debt
= cost of debt × ( 1- tax rate)
= 6% × ( 1 - 23%)
= 4.62%