Exercise D3-10 MathTot 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 $50 17.5 Contribution margin 390,000 $32.5 Sales revenue $600,000 Variable expenses 210,000 Fixed expenses 292,500 Operating income 97,500 What is MathTot's contribution margin ratio? Its variable cost ratio? (Round ratios to 2 decimal places, e.g. 0.38.) Contribution margin ratio Variable cost ratio :3 Compute breakeven sales. (Use the rounded contribution margin ratio calcuated in the previous part to compute Breakeven Sales.) Breakeven sales What is MathTot's margin of safety? Margin of safety