Answer:
= 9.5%
Explanation:
The weighted average cost of capital can be computed as follows:
After tax cost of debt :
= Before-tax cost of debt (1-T)
= 7.8% ×  (1-0.21)
= 6%
Market value
Equity = 105× 22= 2,310.00
Preferred stock = 25× 45= 1,125.00       Â
Bonds= 98% × 1500=1,470.00
Type          cost   Market value     Cost × equity
Equity        12.4    2,310.00          286.44
Preferred stock  8%      1,125.00        90.00
Bond         6%     1,470.00        1 90.58
                    4,905.00     467.02
WACC = (467.02/4,905.00 ) × 100
     = 9.5%