Problem 11-20 Return on investment (ROI) Analysis CL011-1] The contribution format income statement for Huerra Company for last year is given below Total Unit Sales $1,008,000 50.40 Variable expenses 604.800 30.24 Contribution margin 403,200 20.16 Fixed expenses 321,200 16.06 Net operating income 82,000 4.10 1.64 Income taxes 40% 32,800 49,200 2.46 Net income The company had average operating assets of $497,000 during the year