please answer all questions and show work completely.

MEGAFRAME COMPUTER COMPANY Balance Sheet As of December 31 ASSETS Cash $ 50,000 Accounts receivable 70,000 110,000 Inventory Net plant and equipment 220,000 Total assets $ 450,000 LIABILITIES AND STOCKHOLDERS' EQUITY Accounts payable $ 70,000 Accrued expenses 50.000 Long-term debt 130.000 Common stock 70.000 Paid-in capital 40.000 Retained earnings 90.000 Total liabilities and stockholders' equity 450.000 MEGAFRAME COMPUTER COMPANY Income Statement For the year ended December 31 Sales (all on credit) 875,000 Cost of goods sold 600,000 Gross profit 275,000 30,000 Sales and administrative expenses Depreciation 55,000 Operating profit S 190,000 Interest expense 25,000 Profit before taxes S 165,000 Taxes (30%) 49.500 Net income CA 115.500 Please use the tables above to calculate followings ratios and show your work: (1) ROE (2) Net Profit Margin (3) ROA