please calculate before - tax cost debt and after tax cost

Flotation costs and the cost of debt Currenlly. Warren indusines can soll 20 -year, \\( \\$ 1,000 \\)-par-value bonds paying annual interest at a \15 coupon rate. Becauso current market rates for similar bonds aro just under \15, Warren can soll its bonds for \\( \\$ 970 \\) each; Warren wir incur flotation costs of \\( \\$ 30 \\) per bond The firm is in the \25 tax bracket. a. Find the not proceede from the sale of the bond, \\( N_{\\mathrm{d}} \\) b. Calculate the before-tax and after-tax costs of debl. a. The net proceods from the sale of the bond, \\( N_{p,} \\) is \\( \\$ 940 \\). (Round to the noarest dollar) b. The before-tax cost of debt is 4. (Round to two decimal places.)