Kahn Industries has annual sales of $190,000. Earnings before interest and taxes (EBIT) is equal to 8.0% of sales. For the period, the firm paid $3,440 in interest expense. What is the net profit margin (%) if the average tax rate is 20%. [Enter your answer rounded to one-tenth of a percent. For example, if your answer is 6.39%, enter 6.4. Do not enter the % sign. Do not enter in decimal form (i.e., don't enter 0.064 for 6.4%).] Your