How do I determine the effect of eliminating department 4 would have on the total firm net income? (Ignoring the effect of income tax)

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 $2,100,000 $1,650,000 $450,000 Cost of sales 1,326,000 1,006,500 319,500 Gross profit 774,000 643,500 130,500 Direct expenses $144,000 $120,000 $24,000 Common expenses 316,000 200,500 115,500 Total expenses 460,000 320,500 139,500 Net income (Loss) $314,000 $323,000 $(9,000) Required a. Calculate the gross profit percentage for departments 1-3 combined and for department 4. Department 1-3 39 % Department 4 29 % 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: $ 314,000 X Check You have correctly selected 2. Partially correct