Problem What ?sthe annual tax shield to a firm that has a capital stricture com asting of S100 million ofdelt and $180 million of equity, if the average marginal tax rate is 40%? interest rate on debt is9%, de return on equity is 13%.and the Problem 2 The maragement of Graphicopy is trying to determine how much debt they should have in their capital structure. If they sell S500,000 in perpetual bonds with a 9 pervent coupon, what would be the presens value of the tax shield? Assume the marginal tax rate is35%