Please show calculations in Excel. Otherwise, do not attempt to answer

The Weston Enchilada Company has a levered equity beta of 0.8. The company is thinking about getting into the Whataburger business. Currently, Weston Enchilada is financed with 50% long-term debt. The debt is risk free and pays 4% interest before taxes. A little research suggests that the Whataburger business is expected to yield 16% on after-tax total operating cash flows. For comparison, another Whataburger in town has an equity beta of 2.5 but has 20% debt in its capital structure. You can assume that the market return is 12%, marginal tax rates on everything are 35% and the new project would be financed with 50% debt. Find the WACC for the new Whataburger venture and decide what Weston Enchilada should do?

Please show calculations in Excel. Otherwise, do not attempt to answer