Answer:
11.05%
Step-by-step explanation:
Use the following formula to calculate the cost of capital under the proposed leveraging
Cost of capital = ( Debt /Firm value ) x ( ( Unlevered cost of capital x ( 2 - tax rate ) )
Where
Debt = $800
Firm Value = $1,600
Unlevered cost of capital = 13%
Tax Rate = 30%
Placing values in the fromula
Cost of capital = ( $800 / $1,600 ) x ( ( 13% x ( 2 - 30% ) )
Cost of capital = 0.50 x ( 0.13 x 1.70 )
Cost of capital = 0.50 x 0.221
Cost of capital = 0.1105
Cost of capital = 11.05%