Answer:
The cost of capital is 10.89%.
Step-by-step explanation:
Cost of retained earnings = ((Dividend * (100% + Dividend growth rate)) / Stock price) + Growth rate = ((4.79 * (100% + 8%)) / 90) + 8% = 13.748%
Cost of common stock = Cost of retained earnings = 13.748%
Cost of capital = (Weight of debt * (Cost of debt * (100% - Tax rate))) + (Weight of common stock * Cost of common stock) = (40% * (10% * (100% - 34%))) + (60% * 13.748%) = 10.89%
Therefore, the cost of capital is 10.89%.