Marwick's Pianos, Incorporated, purchases planos from a large manufacturer for an average cost of $1.493 per unit and then sells them to retail customers for an average price of $2,500 each. The company's selling and administrative costs for a typical month are presented below Costs Cost Formula Selling: Advertising $956 per month Sales salaries and commissions $4,828 per month, plus 4X of sales Delivery of pianos to customers $62 per piano sold Utilities $651 per month Depreciation of sales facilities $4,962 per month Administrative: Executive salaries $13,456 per nonth Insurance $719 per month Clerical $2,451 per month, plus $43 per piano solo Depreciation of office equipment $880 per month During August, Marwick's Pianos, Incorporated, sold and delivered 57 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