Can someone explain how I get these ratios

TEW COMPANY Balanoc Sheet As of December 31, 2007 ASSETS Cash Accounts Receivable Inventory Net Plant and Equipment Total Assets $20,000 80,000 50,000 250,000 $400,000 LIABILITIES AND STOCKHOLDERS' EQUITY Accounts Payable Accrued Expenses $40,000 60,000 Long-Term debt Common Stock Paid-In capital Retained earnings 130,000 100,000 10,000 Total Liabilities and Stockholders' Equity $400,000 TEW COMPANY Income Statement For the Year Ended December 31, 2007 $500,000 Sales (all on credit) Cost of Goods Sold Gross Profit Sales and Administrative Expense Fixed Lease Expenses Depreciation Operating Profit Interest Expense Profit before Taxes Taxes (35%) 200,000 300,000 20,000 10,000 40,000 230,000 20,000 210,000 73.500 $136,500 Net Income