Answer:
15.167%
Explanation:
For computing the WACC we need to do the following calculations which are shown below:
Cost of equity = Risk free rate + Beta × Market risk premium Â
= 3% + 2 × 9%
= 21% Â
After tax cost of debt = Cost of debt ×  (1-Tax Rate)
= 5% × (1 - 0.30)
= 3.50%
Now
WACC = Weight of debt ×  Cost of debt + Weight of equity × Cost of equity
= 5 ÷ 15 × 3.50 + 10 ÷ 15 × 21
= 1.167% + 14%
= 15.167%