In March, Mitchell Limited had sales of $489,900 (71,000 units), total variable expenses of $362,526, and total fixed expenses of $75,400. Required: 1. What is the companys CM ratio? 2. Calculate the break-even level of sales in dollars. 3. Estimate the change in the companys operating income if it increased its total sales by $24,840. (Do not round intermediate calculations. Round your answers to 2 decimal places.)