please show work and do not put it in excel

Hard Working Inc. Balance Sheet As of December 31, 2012 ASSET LIABILITIES AND SHAREHOLDERS EQUITY Currer Asset Current Liabilities Cash 1,800 Accounts Payable Accounts Receivable 400 Notes Payable Inventory Total Current Liabilities Investments 1.200 Long Term Debt Total current Assets 3.800 TOTAL LIABILITIES Capital Expenditures 8.00 TOTAL ASSETS 4.600 Shareholders Equity Common Stock Note: Working Capital (A/R + Inv-A/P) 400 600 409 1.000 2.100 2.800 300 Select 2020 Income Statement information: Revenue $9.000 Cost of Goods Sold $5,400 Sales Expense $1,800 Depreciation $500 Net Income $900 What is the current ratio? What are the days receivables? What are the days payables? Net Income: $500 $900 What is the current ratio? What are the days receivables? What are the days payables? What is the gross profit margin percentage? What is the operating profit margin percentage? What is the company's Return on Equity