Please show work / excel formula as much as possible! Thank you in advance.

Mexinc Inc. is evaluating a new project that has the same risk as that of the firm. Mexinc currently has 8 million shares of common stock outstanding with a stock price of $65 per share with a beta of 1.20 and 200,000 bonds outstanding, with a coupon rate of 6%, par value $1,000 each, 20 years to maturity and the bonds make semi-annual interest payments. Bonds are currently trading at 106 percent of par. The market risk premium is 7 percent and the risk-free rate is 3%. Corporate tax rate is 24%. What rate should the company use to evaluate this project? Calculate this rate