The following costs result from the production and sale of 4,300 drum sets manufactured by Tight Drums Company for the year December 31, 2017. The drum sets sell for $280 each. The company has a 35% income tax rate. $ 98,900 378,400 137,600 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: II in income statement for the company. Compute its contribution margin per unit and its contribution margin ratio. (Round Contribution margin ratio to nearest whole percentage.) TIGHT DRUMS COMPANY Contribution Margin Income Statement (partial) For Year Ended December 31, 2017 Per Unit $ 1,204,000 Sales Variable costs. Plastic for casing Wages of assembly workers Drum stands Sales commissions 98,000 378,400 137,600 90,300 Total variable costs Contribution margin 704,300 498,800 Contribution Margin Ratio $ 100% Sales 1.204,000 704.300 498 800 Variable costs Contribution margin