Raner, Harris, & Chan is a consulting firm that specializes in information systems for medical and dental clinics. The firm has two offices-one 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 company's most recent year is glven below Office Total Company 243,000 54.0% 27,000 30% 216,000 60% 207,000 46.0% 63,000 70% 144,000 40% Minneapolls Sales Variable expenses Chicago $ 450,000 100.0% $ 90,000 100% $360,000 100% Contribution margin Traceable fixed expenses 100.8 00.22.4% 46,800 52% 54,000 15% Office segment margin 106,200 23.6% $ 16,200 18% $90,000 25% Common fixed expenses not traceable to offices 72.000 16.0% Net operating tncome $ 34,200 76%