Contribution Margin Ratio, Variable Cost Ratio, Break-Even Sales Revenue The tontroller of Jeong Company prepared the following projected income statement: 1. Calculate the contribution margin ratio. Note: Enter as a percent, rounded to the nearest whole numbei 2. Calculate the variable cost ratio. Note: Enter as a percent, rounded to the nearest whole number. 3. Calculate the break-even sales revenue for leong. Note: Round your answer to the nearest dollar. 4. How could Jeong increase projected operating income without increasing the total sales revenue