Answer:
a. Cost of debt = Interest * (1 - Tax rate)
= 10%*(1 - 0.30)
= 7%
Cost of preferred stock = Dividend/ Issue price
= 5/48
= 10.42%
Cost of common stock (Cost of retained earnings) = (D1/P0) + g
= (4/33) + 0.07
= 0.12 + 0.07
= 0.19
= 19%
b. Fund Cost Weight Cost * Weight
Debt 7% 0.15 1.05%
Preferred stock 10.42% 0.10 1.042%
Retained earnings 19% 0.75 14.25%
WACC 16.342%