Problem 21-1A Contribution margin income statement and contribution margin ratio LO A1 The following costs result from the production and sale of 4,300 drum sets manufactured by Tight Drums Company for the year ended December 31, 2019. The drum sets sell for $280 each. The company has a 35% income tax rate. $ 98,960 378,400 137,600 90, 300 Variable production costs Plastic for casing Wages of assembly workers Drum stands Variable selling costs Sales commissions Fixed manufacturing costs Taxes on factory Factory maintenance Factory machinery depreciation Fixed selling and administrative costs Lease of equipment for sales staff Accounting staff salaries Administrative management salaries 13,000 26,000 86,000 26,000 76,000 156,000 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