er unit) (Round interim calculations to four decimal places and final answ by Data Table -X ales i O c Mueller Mufflers Contribution Margin Income Statement Month Ended June 30, 2016 ting Sales Revenue (240 units x $175) 42,000 opera ice Variable Costs (240 units x $125) 30,000final a 12,000 9,000 3,000 e Contribution Margin qFixed Costs ith the Operating Income er int Done