Apple Inc. reports the following as of September 30, 2023:

• Assets:
  • Cash: $120 billion
  • Marketable Securities: $150 billion
  • Accounts Receivable: $50 billion
  • Inventories: $3 billion
  • Total Current Assets: $323 billion
  • Property, Plant & Equipment: $180 billion
  • Total Assets: $750 billion
• Liabilities:
  • Accounts Payable: $60 billion
  • Short-term Borrowings: $10 billion
  • Long-term Debt: $110 billion
  • Shareholders’ Equity: $570 billion
• Revenue and Expenses:
  • Revenue: $450 billion
  • Cost of Sales: $250 billion
  • Operating Expenses: $100 billion
  • Interest Expense: $5 billion
  • Tax Rate: 25%

Requirements:

1. Calculate the quick ratio.
2. Compute the operating margin.
3. Determine the equity ratio.
4. Evaluate the interest coverage ratio.