Problem 1: Using the cost of debt approximation formula, determine the pre-tax cost for a bond that sells at $ 925 par value and pays a coupon of $ 85 for 20 years. The flotation costs are $ 5 per bond. You must show the calculations to receive a score for your answer. Problem 2: For the case in problem 3, calculate the cost of debt after taxes if the company's tax liability is 40%. You must show the calculations to receive a score for your