Marwick's Pianos, Inc., purchases pianos from a large manufacturer for an average cost of $1,494 per unit and then sells them to retail customers for an average price of $3,200 each. The company's selling and administrative costs for a typical month are presented below Costs Selling: Cost Formula Advertising Sales solaries and commissions Delivery of pianos to customers Utilities Depreciation of sales facilities $960 per month $4,774 per month, plus 6% of sales $61 per piano sold $661 per month $5,047 per month Administrative: Executive salaries Insurance Clerical Depreciation of office equipment $13,402 per month $698 per month $2,514 per month, plus $40 per piano sold $886 per month During August, Marwick's Pianos, Inc., sold and delivered 58 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