please answer both questions

Speedy Delivery Systems can buy a piece of equipment that is anticipated to provide an 5 percent return and can be financed at 2 percent with debt. Later in the year, the firm turns down an opportunity to buy a new machine that would yield a 12 percent return but would cost 20 percent to finance through common equity. Assume debt and common equity each represent 50 percent of the firm's capital structure. a. Compute the welghted average cost of capital. (Do not round Intermediate calculations. Input your answer as a percent rounded to 2 decimal places.) Weighted average cost of capital b. Which project(s) should be accepted? New machine. O Piece of equipment. Calculate the aftertax cost of debt under each of the following conditions. (Do not round intermediate calculations. Input your answers as a percent rounded to 2 decimal places.) Yield a. Corporate Tax Rate 24 % 30 % 40 % 10.0 % 10.6% 8.4% Aftertax Cost of Debt (0.14) % % % b. C