$165 5-35 Contribution Income Statement Spadoni Company had the following data (in thousands) for a given period. Assume there are no inventories. Direct labor Direct materials 160 Variable indirect manufacturing 100 185 Contribution margin Fixed selling and administrative expenses Operating income Sales Compute the (a) variable manufacturing cost of goods sold, (b) variable selling and administrative expenses, and (c) fixed indirect manufacturing costs. 105 45 855