How much is the tax rate for C? (27% is wrong)

Hui is currently considering investing in municipal bonds that earn 6 percent interest, or in taxable bonds issued by the Coca-Cola Company that pay 8 percent. Required: a. If Hui's tax rate is 22 percent, which bond should he choose? b. Which bond should he choose if his tax rate is 32 percent? c. At what tax rate would he be indifferent between the bonds? d. What strategy is this decision based upon? Complete this question by entering your answers in the tabs below. At what tax rate would he be indifferent between the bonds