Problem 18-1A Contribution margin income statement and contribution margin ratio LO A1 The following costs result from the production and sale of 4,500 drum sets manufactured by Tight Drums Company for the year ended December 31, 2019. The drum sets sell for $300 each. The company has a 35% income tax rate. Variable production costs Plastic for casing Wages of assembly workers Drum stands Variable selling costs Sales commissions Fixed manufacturing costs $121,500 414,000 162,000 112,500 Taxes on factory 15,000 Factory maintenance 30,000 Factory machinery depreciation 90,000 Fixed selling and administrative costs Lease of equipment for sales staff 30,000 Accounting staff salaries Administrative management salaries 80,000 160,000 Required: 1. Prepare a contribution margin income statement for the year. 2. Compute its contribution margin per unit and its contribution margin ratio. 3. For each dollar of sales, how much is left to cover fixed costs and contribute to operating income? Complete this question by entering your answers in the tabs below.