Raner, Harris and Chan is a consulting firm that specializes in information systems for medical and dental clinics. The firm has two officesone in Chicago and one in Minneapolis. The firm classifies the direct costs of consulting jobs as variable costs. A contribution format segmented income statement for the companys most recent year is given: Total Company Office Chicago Minneapolis Sales $ 508,500 100.00% $ 169,500 100.00% $ 339,000 100.00% Variable expenses 254,250 50.00% 50,850 30.00% 203,400 60.00% Contribution margin 254,250 50.00% 118,650 70.00% 135,600 40.00% Traceable fixed expenses 142,380 28.00% 88,140 52.00% 54,240 16.00% Office segment margin 111,870 22.00% $ 30,510 18.00% $ 81,360 24.00% Common fixed expenses not traceable to offices 7