please answer both questions

24. An investor is in the 26% federal tax bracket, pays a 7% state tax rate and 2% in local income taxes. For this investor a municipal bond paying 6.0 percent interest is equivalent to a corporate bond paying interest. A) 7.79 percent B) 10.17 percent C) 9.08 percent D) 9.23 percent E) 8.47 percent 25. An investor is trying to decide between a municipal bond paying 5.43% or an equivalent taxable corporate paying 7.15%. What is the minimum marginal tax rate the investor must have to consider buying the municipal bond? A) 80.00% B) 20.00% C) 26.00% D) 66.67% E) 24.00%