Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Sales 100% 40% Amount $ 126,000 50,400 75,600 24,000 $ 51,600 Sales Variable expenses Contribution margin Fixed expenses Net operating income 60% Required: 1. Compute the company's degree of operating leverage. (Round your answer to 2 decimal places.) Degree of operating leverage 2. Using the degree of operating leverage, estimate the impact on net operating income of a 20% increase in sales. (Round your intermediate calculations to 2 decimal places. Round your percentage answer to 2 decimal places (i.e.1234 should be entered as 12.34).) Net operating income by 3. Construct a new contribution format income statement for the company assuming a 20% increase in sales. Engberg Company Contribution Income Statement Total $