IBM has shared the following data for its Global Technology Services segment for the year ended December 31, 2023:

Income Statement

• Sales revenue: $70,000,000
• Cost of goods sold: $35,000,000
• Gross margin: $35,000,000
• Operating expenses:
  • R&D expenses: $10,000,000
  • Marketing expenses: $7,000,000
• Operating income: $18,000,000
• Nonoperating items:
  • Interest expense: $2,000,000
  • Loss on sale of investments: $1,000,000
• Net income: $15,000,000

Balance Sheet

• Assets:
  • Cash: $5,000,000
  • Accounts receivable: $7,000,000
  • Inventory: $3,000,000
  • Property, plant, and equipment: $25,000,000
• Total assets: $40,000,000
• Liabilities:
  • Accounts payable: $2,000,000
  • Short-term loans: $5,000,000
  • Long-term debt: $15,000,000
• Stockholders' equity: $18,000,000
• Total liabilities and stockholders' equity: $40,000,000

Requirements:

1. Calculate the gross profit margin.
2. Determine the operating profit margin.
3. Compute the return on equity (ROE).
4. Calculate the current ratio.
5. Find the interest coverage ratio.