The following is Allison Corporation's contribution format income statement for December 2014: Sales $800,000 Less: variable expenses 300,000 Contribution margin 500,000 Less: fixed expenses 400,000 Operating income $100,000 The company had no beginning or ending inventories. The company produced and sold 10,000 units in December. Required: Assuming no change in either the cost structure or the average selling price, prepare a contribution format income statement for a month Allison Corporation reports no before-tax profit or loss: Short AnswerToolbar navigation opens in a dialog