Question 10 The following is Allison Corporation's contribution format income statement for last month: Sales: $900,000 Variable Expenses: $600,000 Contribution Margin: $300,000 Fixed Expenses: $150,000 Net Operating Income: $ ?2222? The company has no beginning or ending inventories. The company produced and sold 15,000 units last month. If the Company's Operating Income Increased by 20 % , what is the percentage increase in the Company's sales? 50 % 10% 2% 12%