Marwick's Pianos, Inc., purchases planos from a large manufacturer for an average cost of $1,489 per unit and then sells them to retail customers for an average price of $3,100 each. The company's selling and administrative costs for a typical month are presented below: Cost Formula 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 $930 per month $4,795 per month, plus 3% of sales $61 per piano sold $668 per month $5,007 per month K $13,571 per month $689 per month $2,506 per month, plus $41 per piano sold $856 per month ences During August, Morwick's Planos, Inc., sold and delivered 64 planos. Required: 1. Prepare a traditional format income statement for August 2. Prepare a contribution format income statement for August. Show costs and revenues on bdn a total and a per unit basis down through contribution margin