(LO 2-7) 2-54. Gross Margin and Contribution Margin Income Statements The following data are from the accounting records of Niles Castings for year 2. 85,000 Units produced and sold Total revenues and costs Sales revenue Direct materials costs. Direct labor costs Variable manufacturing overhead Fixed manufacturing overhead.. Variable marketing and administrative costs Fixed marketing and administrative costs $264,000 68,000 34,000 17,000 44,000 13,600 32,000 Required Prepare: A gross margin income statement. b. A contribution margin income statement. a