Question 11 of 13 Sheridan 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 $572,000 $52 Variable expenses 171,600 15.60 Contribution margin 400,400 $36.40 Fixed expenses 294,000 Operating income $106,400 (a) Accounting Mult Not stan -14 Question 6 Accounting Mustep Not stam Question 7 Accounting Mu Not starte Question 8 Accounting Mutty Nit starte Question 9 /4 Accounting Dropdown Notarsed Question 10 Aling M -14 started Viewing Question 14 11 Ne Ang Question 12 -74 What is Sheridan's contribution margin ratio? its variable cost ratio? (Round ratios to 2 percentage places, eg 0.38-38K) Mad Contribution margin ratio Question 13 Augu -17