Marwick's Pianos, Inc., purchases pianos from a large manufacturer for an average cost of $1,500 per unit and then sells them to retail customers for an average price of $2,000 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 $966 per month $4,804 per month, plus 5% of sales $61 per piano sold $631 per month $4,909 per month $13,427 per month $703 per month $2,491 per month, plus $35 per piano sold $876 per month During August, Marwick's Pianos, Inc., sold and delivered 63 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. Prepare a traditional format income statement for August. (A "Net op Marwick's Pianos, Inc. Traditional Income Statement For the Month of August Gross margin Selling and administrative expenses: Selling expenses Advertising 0 Total selling expenses Administrative expenses: 0 Total administrative expenses Total selling and administrative expenses 0