calculate the after tax return of a 11.23 percent, 20 year, a-rated corporate bond for an invested in the 15 percent marginal tax bracket. Compare this yield to a 7.09 percent, 20 year, a-rated, tax exempt municipal bond amd explain which alternative is better. repeat the calculation amd comparison for an investor in the 33 percent marginal tax bracket.

The after-tax return of a 11.23 percent, 20 year, a -rated corporate bond for an investor in the 15 percent marginal tax bracket is _____% ( round to two decimal places)