got homework must be delivered on 11.30 thank you for your time and help

You have been asked to calculate the cost of capital for EcoNew, Inc. The firm has the following characteristics:

• There are 140 million shares outstanding, trading at 21.825 TL per share.
• The firm has a book value of debt with a maturity of 5 years of 520 million TL, and interest expenses of 57.2 million TL on the debt. The firm is not rated, but it had operating income of 215 million TL last year. (Firms with an interest coverage ratio of 3.0 to 4.0 were rated BB+, and the default spread was 2%.)
• The tax rate for the firm is 22%.

The Treasury bond rate is 6%, and the unlevered beta of similar companies is 1.10. The market risk premium is 5%.

a. Estimate the market value of debt for this firm.

b. Based on the synthetic rating, estimate the cost of debt for the firm.

c. Estimate the cost of capital for the firm.