A farmer is considering the purchase of additional land to expand operations. The marginal tax rate is 15% and He requires at least an 11% pre-tax, risk free return on capital and a 2.5% risk premium on projects on comparable risk. What is the after-tax, risk adjusted discount rate? r=[rbt + PREM ](1m) A farmer is considering the purchase of additional land to expand operations. The marginal tax rate is 18% and He requires at least a 15% pre-tax, risk free return on capital and a 4% risk premium on projects on comparable risk. What is the after-tax, risk adjusted discount rate? r=[rbt + PREM ](1m)