Marwick's Planos, Incorporated, purchases planos from a manufacturer for an average cost of $1,481 per unit and then sells them to retail customers for an average price of $2.600 each. The company's selling and administrative costs for a typical month are presented below: 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