Chevron Corporation has released the financial data for its Upstream segment for the fiscal year ending December 31, Year 3.

Income Statement for Year Ended December 31, Year 3

• Sales revenue: $1,400,000
• Cost of goods sold: $840,000
• Gross profit: $560,000
• Operating expenses: $280,000
• Research and development expenses: $120,000
• Depreciation expense: $80,000
• Operating income: $80,000
• Interest expense: $60,000
• Other income: $50,000
• Net income: $70,000

Balance Sheet as of December 31, Year 3 Assets

• Cash: $500,000
• Accounts receivable: $480,000
• Inventory: $400,000
• Property, plant, and equipment (net): $1,000,000
• Other assets: $250,000
• Total assets: $2,630,000

Liabilities

• Accounts payable: $350,000
• Short-term debt: $300,000
• Long-term debt: $900,000
• Stockholders' equity: $1,080,000
• Total liabilities and stockholders' equity: $2,630,000

Required:

1. Compute the gross profit margin.
2. Calculate the operating profit margin.
3. Determine the return on assets (ROA).
4. Find the current ratio.
5. Compute the debt to equity ratio.