Answer:
11.33%
Step-by-step explanation:
Cost of debt (Cd) = 8% = 0.08
Cost of Equity (Ce) = 13% = 0.13
E = market value of firm's equity = 75% = 0.75
Market value of debt (D) = 25% = 0.25
Tax rate (T) = 21% = 0.21
WACC = (E/T0) *Ce + (D/T0) * Cd * (1-T)
= 0.75 * 0.13 + 0.25 * 0.08 * (1 - 0.21)
= 0.0975 + 0.0158
= 0.1133
= 0.1133 * 100%
= 11.33%