PST Corporation provides the following financial details:

Income Statement for Year Ended December 31, 2023

• Total Sales: $950,000
• Cost of Sales: $570,000
• Gross Profit: $380,000
• Administrative Expenses: $130,000
• Selling Expenses: $70,000
• EBIT: $180,000
• Interest Expense: $15,000
• Tax Expense: $30,000
• Net Profit: $135,000

Balance Sheet as of December 31, 2023

• Assets:
  • Cash and Equivalents: $30,000
  • Accounts Receivable: $90,000
  • Inventory: $110,000
  • Property, Plant, and Equipment (Net): $250,000
  • Total Assets: $480,000
• Liabilities and Equity:
  • Current Liabilities: $60,000
  • Long-term Debt: $160,000
  • Common Stock: $200,000
  • Retained Earnings: $60,000
  • Total Liabilities and Equity: $480,000

Required:

1. Compute the ROI for PST Corporation.
2. Determine the quick ratio.
3. Calculate the net profit margin.
4. Find the equity multiplier.
5. Assess the interest coverage ratio.