Problem 3-6 (Algo) Profitability ratios [LO3-2] Dr. Zhivgo Diagnostics Corporation's income statement for 20X1 is as follows: Sales Cost of goods sold Gross profit Selling and administrative expense Operating profit Interest expense Income before taxes Taxes (30%) Income after taxes a. Compute the profit margin for 20X1. Note: Input the profit margin as a percent rounded to 2 decimal places. Profit margin $ 2,750,000 1,450,000 $ 1,300,000 377,000 $923,000 57,600 $ 865,400 259,620 $ 605,780 % b. Assume that in 20X2, sales increase by 10 percent and cost of goods sold increases other expenses the same. Assume a tax rate of 30 percent on income before taxes. W