PROBLEM 86 Sure Sprinkler Systems installs sprinkler systems in home yards. The company's most recent monthly contribution format income statem follows: Sales Variable expenses Contribution margin Fixed expenses Net operating income Required: Percent of Amount Sales $ 800,000 100 96 320,000 40 96 480.000 60 % 380,000 $ 100,000 1. What is the company's degree of operating leverage