elmain Co. expects to maintain the same inventories at the end of 20Y7 as at the beginning of the year. The total of all production costs for the ear is therefore assumed to be equal to the cost of goods sold. With this in mind, the various department heads were asked to submit stimates of the costs for their departments during the year. A summary report of these estimates is as follows: 2. What is the expected contribution margin ratio? Round to the nearest whole percent. % 3. Determine the break-even sales in units and dollars. Units units Dollars 4. Construct a cost-volume-profit chart on your own paper. What is the break-even sales? $ 5. What is the expected margin of safety in dollars and as a percentage of sales? Dollars: Percentage: (Round to the nearest whole percent.) % 6. Determine the operating leverage. Round to one decimal place