Dollar General reported stronger than typical earnings with annual sales of $1,700,000 per store for the prior year. Wages totaled $200,000 and were 18% higher than the prior year. The total costs of goods sold was $1,000,000 and did not include sales taxes of $30,000. At year end the company reported a net income to $300,000 per store. After changes for non-cash operating items the company cash flow was reported at $550,000 per store. Based on this data what was the company profit margin?