Petra corporation has total assets of $ 400,000 (55% of them are fixed assets), total equity of 150,000. Long term debt of $100,000. Net income of $50,000, accounts receivable of $30,000, sales of $550,000. use this information to solve the following questions: Find the current ratio. Find the Average collection period (day sales outstanding) (year=365 day). Find the Net profit margin ratio