Opu and Mamun started a new business manufacturing hair dying cream. They both kept separate set of accounts of their business. However, at the end of the first year of operations their net incomes didnt match. A fight was about to start between the two owing to discrepancy in net incomes. Rafsan, their friend, asked them to present their income statements. As such information relating to the businesss the first year of operation follow: Production in units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27000 Sales in units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22000 Variable manufacturing cost per unit produced. . . . . . . . . . . . . $9 Variable selling and administrative expense per unit sold. . . . . $3 Fixed manufacturing overhead costs (total) . . . . . . . . . . . . . . . $307800 Using the above data, Mamun presented the following income statement: Sales (22000 units) . . . . . . . . . . . . . . . . . . . . . . . . . . $946000 Cost of goods sold . . . . . . . . . . . . . . . . . . . . . . . . . . . $448799.99999999994 Gross margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $497200.00000000006 Selling and administrative expenses . . . . . . . . . . . . $264100 Net operating income. . . . . . . . . . . . . . . . . . . . . . . . . $233100.00000000006

Opu, on the other hand asked for your help to prepare a variable costing income statement. Prepare a variable costing income statement of Opu and Mamun (5 marks) and explain why the net income between the two methods differ