Dropping Unprofitable Department Thomas Corporation has four departments, all of which appear to be profitable except department 4. Operating data for 2019 are as follows: Total Departments 1-3 Department 4 Sales $1,000,000 $900,000 $100,000 Cost of sales 631,000 558,000 73,000 Gross profit 369,000 342,000 27,000 Direct expenses $144,000 $120,000 $24,000 Common expenses 107,000 96,000 11,000 Total expenses 251,000 216,000 35,000 Net income (Loss) $118,000 $126,000 $(8,000) Required a. Calculate the gross profit percentage for departments 1-3 combined and for department 4. Department 1-3 0 % Department 4 0 % b. What effect would elimination of department 4 have had on total firm net income? (Ignore the effect of income tax.) The firm's net income would be: $ 0