The following costs result from the production and sale of 1000 drum sets manufactured by Tight Drums December 31, 20T7. The drum sets sell for S500 each. The company has a 25% income tax Company for the year ended Variable production costs Plastic for casing Wages of assembly workers Drum stands 17,80 82,886 26,80e Variable selling costs Sales commissions 15,ee Fixed manufacturing costs Taxes on factory Factory maintenance 5,800 1e,800 40,e00 Fixed selling and administrative costs Lease of equipment for sales staff Accounting staff salaries Administrative management salaries 10,8e0 35,e0 125,8e0 Required: 1. Prepare a contribution margin income statement for the company. 2. Compute its contribution margin per unit and its contribution margin ratio. abs below. Complete this question by entering your answers in the t Required 1 Required 2 Compute its contribution margin per unit and its contribution margin ratic. TIGHT DRUMS COMPANY Contribution Margin Income Statement (partial) For Year Ended December 31, 2017 Per Unit Sales