Answer:
Ans. Bad Boys, Inc.’s cost of capital = 9.09%
Explanation:
hi, we need to find the cost of all the debt instruments of the problem, let´s start by stating that the cost of hte tax-deductable debt is 8% (equals to the coupon rate of the bond).
Preffered Stock
In order to find the cost of the preffered stock, we need to use the following formula.

Cost of Preffered Stock= 10%
Common Stock
To find the cost of the common stocks, we have to use the following formula.


Common Stock Cost = 12.5%
If tax rate is 35%, the cost of capital of Bad Boys, Inc is found by using the following formula.


The cost of capital is =9.09%
Best of luck.