Mercedes, Co. has the following quarterly financial information Sales revenue Cost of goods sold Operating expenses Interest expense Income tax expense Average number of common shares outstanding Stock price when Q4 EPS released 4th Quarter 3rd Quarter 2nd Quarter 1st Quarter $907,800 $917,300 $915,600 $923,400 304,800 317,400 317,000322,200 248,000 259,400257,600261,700 3,650 90,000 804,500 3,750 87,500 794,530789,564791,170 3,750 84,600 3,750 87,500 $24 a. Calculate the gross profit percentage for each quarter. (Do not round your intermediate calculations and round your final answer to 2 decimal places.) Q4 Q3 Q2 Q1 Gross Profit Percentage 0 0 b. Calculate the net profit margin for each quarter. (Do not round your intermediate calculations and round your final answer to 2 decimal places.) Q4 Q3 Q2 Q1 Net Profit Margin