In March, Mitchell Limited had sales of $280,800 (54,000 units), total variable expenses of $207,792, and total fixed expenses of $72,800. Required: 1. What is the company's CM ratio? CM ratio 2. Calculate the break-even level of sales in dollars. Break-even level of sales in dollars 3. Estimate the change in the company's operating income if it increased its total sales by $13,000. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Original New Operating income