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ERCISES-SETA Dropping lo be profitable except department 4. Operating data for 2016 are as follows: ing Unprofitable Department Thomas Corporation has four departments, all of which appear be pro -IA. L04 SERVICE MERCHAN Total $950,000 634,000 $316,000 $144,000 123,000 $267,000 49,000 Departments 1-3 $800,000 520,000 $280,000 $120,000 105,000 $225,000 55,000 Department 4 $150,000 114,000 36,000 $24,000 18,000 42,000 (6,000) Direct expenses . . Common expenses . Required Calculate the gross profit percentage for departments 1-3 combined and for department 4 What effect would elimination of department 4 have had on total firm net income? (Ignore the effect of income tax.) b