Example 1: These types of questions will be on your final exam! Show all your work

Murphy Inc. operates in the automotive parts business. Murphy is considering expanding.Currently, Murphy has a before tax cost of debt of 6%, and an effective tax rate of 40%. Murphy's capital structure consists of 40% debt and 60% equity. Murphy has identified the following pure play company: Brown Inc. who operates in a similar automotive parts line of business. Brown Inc. has a before tax cost of debt of 5%, a debt to equity ratio of 0.50, and an effective tax rate of 30%. Its stock has as much systematic risk as the market portfolio. The market risk premium is 4%, and the risk free rate of interest is 3%.

a)Determine the appropriate cost of capital (WACC) for the Murphy Inc should use for evaluating an expansion in their automotive parts division. Assume the expansion project will have a debt to equity ratio similar to that of Murphy. Hint: Unlever Brown's beta, Re-lever the beta using Murphy's's debt to equity ratio and tax rate. Then determine the cost of equity for the expansion project. Insert the cost of equity in the WACC and determine the WACC for the expansion project.