12 Speedy Delivery Systems can buy a piece of equipment that is anticipated to provide an 6 percent return and can be financed at 3 percent with debt. Later in the year, the firm turns down an opportunity to buy a new machine that would yield a 10 percent return but would cost 12 percent to finance through common equity. Assume debt and common equity each represent 50 percent of the firm's capital structure. 4 points a. Compute the weighted average cost of capital. (Do not round intermediate calculations. Input your answer as a percent rounded to 2 decimal places.) 02:10:50 Weighted average cost of capital % b. Which project(s) should be accepted? O New machine. O Piece of equipment