Marwick's Pianos, Incorporated, purchases pianos from a manufacturer for an average cost of $1,481 per unit and then sells them to retail customers for an average price of $3,300 each. The company's selling and administrative costs for a typical month are prese below: Costs Selling: Advertising Sales salaries and commissions Delivery of pianos to customers Utilities Depreciation of sales facilities Administrative: Executive salaries Insurance Clerical Depreciation of office equipment Cost Formula $937 per month $4,771 per month, plus 3% of sales $57 per piano sold $654 per month $4,943 per month $13,513 per month $704 per month $2,472 per month, plus $41 per piano sold $863 per month During August, Marwick's Pianos, Incorporated, sold and delivered 61 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.