Marwick's Pianos, Incorporated, purchases pianos from a large manufacturer for an average cost of $1,491 per unit and then se to retail customers for an average price of $2,800 each. The company's selling and administrative costs for a typical month ar presented below: During August, Marwick's Pianos, Incorporated, sold and delivered 63 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 both a total and a per unit basis de through contribution margin