Current Attempt in Progress Cullumber sells a learning system that helps preschool and elementary students learn basic math facts and concepts. The company's income statement from last month is as follows: Total Per Unit Sales revenue $600,000 $50 Variable expenses 270,000 22.50 Contribution margin 330,000 $27.50 Fixed expenses 253,000 Operating income $ 77.000 (a) What is Cullumber's contribution margin ratio? Its variable cost ratio? (Round ratios to 2 percentage places, e.g. 0.38 = 38%.) Contribution margin ratio % Variable cost ratio % e Textbook and Media Save for Later Attempts: 0 of 3 used Submit