Marwick$$s Pianos, Incorporated, purchases pianos from a large manufacturer for an average cost of $$2,450$ per unit and then sells them to retail customers for an average price of $$3,125$ each. The company$$s selling and administrative costs for a typical month are presented below: Costs Cost Formula Selling: Advertising $ $700$ per month Sales salaries and commissions $ $950$ per month, plus $8\%$ of sales Delivery of pianos to customers $ $30$ per piano sold Utilities $ $350$ per month Depreciation of sales facilities $ $800$ per month Administrative: Executive salaries $ $2,500$ per month Insurance $ $400$ per month Clerical $ $1,000$ per month, plus $$20$ per piano sold Depreciation of office equipment $ $300$ per month During August, Marwick$$s Pianos, Incorporated, sold and delivered $40$ pianos. Required: $1.$ Prepare a traditional format income statement for August. $2.$ Prepare a contribution format income statement for August. Show costs and revenues on both a total and a per unit basis down through contribution margin.