Contribution Margin Review the contribution margin income statements for Cover-to-Cover Company and Biblio Files Company on their respective Income Statements. Complete the following table from the data provided on the income statements. Each company sold 82,800 units during the year. Cover-to-Cover Company Biblio Files Company Contribution margin ratio (percent) % Unit contribution margin Break-even sales (units) Break-even sales (dollars) Income Statement - Cover-to-Cover Cover-to-Cover Company Contribution Margin Income Statement For the Year Ended December 31, 2048 Sales $414,000 Variable costs: Manufacturing expense $248,400 Selling expense 20,700 Administrative expense 62,100 (331,200) Contribution margin $82,800 Fixed costs: Manufacturing expense $5,000 Selling expense 4,000 Administrative expense 11,700 (20,700) Operating income $62,100 Income Statement - Biblio Files Biblio Files Company Contribution Margin Income Statement For the Year Ended December 31, 20Y8 Sales $414,000 Variable costs: Manufacturing expense $165,600 Selling expense 16,560 Administrative expense 66,240 (248,400) Contribution margin $165,600 Fixed costs: Manufacturing expense $85,500 Selling expense 8,000 Administrative expense 10,000 (103,500) Operating income $62,100