Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent Amount of Sales 123,000 $ 100% 49,200 40% Sales Variable expenses 73,800 60% Contribution margin Fixed expenses 20,000 53,800 Net operating income 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 25% 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 25% increase in sales. Engberg Company Contribution Income Statement Total