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Practice Question 4 For 2017, Rockford, Inc., had sales of 150,000 units and production of 200,000 units. Selling price per unit was $7. Other information for the year included: Direct manufacturing labor Variable manufacturing overhead Direct materials Variable selling expenses Fixed administrative expenses Fixed manufacturing overhead $197,500 100,000 160,000 100,000 100,000 250,000 There was no beginning inventory. Required : (a) Compute the cost of goods sold under absorption costing. (b) Compute the Contribution Margin under variable costing. (c) Compute the Net Profit under throughput costing