Answer: 6.69%
Step-by-step explanation:
The weighted average cost of capital is calculated as:
= (Weight of equity * Cost of equity) + (Weight of debt * after-tax cost of debt)
Weight of equity:
= 30 million / (30 + 90 million)
= 25%
Weight of debt:
= 100% - Weight of equity
= 100% - 25%
= 75%
WACC = (25% * 11%) + (75% * 7% *(1 - 25% tax rate))
= 2.75% + 3.9375%
= 6.69%