return on investment problems. please explain steps used.

7. The Menswear Department of Major's Department Store had sales of $188,000, cost of goods sold of $132,500, indirect expenses of $13,250, and direct expenses of $27,500 for the current period. The Menswear Department's contribution to overhead as a percent of sales is: a. 7.8%. b. 14.9% c. 29.5%. d. 66.7%. 8. The Carter Company reported the following financial numbers for one of its divisions for the year; average total assets of $4,100,000; sales of $4,525,000; cost of goods sold of $2,550,000; and operating expenses of $1,372,000. Compute the division's retum on investment: a. 30.3%. b. 23.6%. c. 10.4%. d. 14.7%. 9. The Carter Company reported the following financial numbers for one of its divisions for the year; average total assets of $4,100,000; sales of $4,525,000; cost of goods sold of $2,550,000; and operating expenses of $1,372,000. Assume a target income of 10\% of average invested assets. Compute residual income for the division: a. $203,000. b. $193,000 c. $150,500. d. 560,300