# Question: Consider the setting of Problem 18 You decided to look

Consider the setting of Problem 18. You decided to look for other comparables to reduce estimation error in your cost of capital estimate. You find a second firm, Thurbinar Design, which is also engaged in a similar line of business. Thurbinar has a stock price of \$20 per share, with 15 million shares outstanding. It also has \$100 million in outstanding debt, with a yield on the debt of 4.5%. Thurbinar’s equity beta is 1.00.
a. Assume Thurbinar’s debt has a beta of zero. Estimate Thurbinar’s unlevered beta. Use the unlevered beta and the CAPM to estimate Thurbinar’s unlevered cost of capital.
b. Estimate Thurbinar’s equity cost of capital using the CAPM. Then assume its debt cost of capital equals its yield, and using these results, estimate Thurbinar’s unlevered cost of capital.
c. Explain the difference between your estimates in part (a) and part (b).
d. You decide to average your results in part (a) and part (b), and then average this result with your estimate from Problem 17. What is your estimate for the cost of capital of your firm’s project?

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