The following are the financial highlights for Amazon for the year ended December 31, 2022:

Income Statement:

Net Sales: $700,000

Cost of Sales: $490,000

Operating Expenses: $150,000

Income Tax: $10,000

Net Income: $50,000

Balance Sheet:

Cash: $60,000

Receivables: $110,000

Inventory: $140,000

Plant and Equipment: $290,000

Current Liabilities: $140,000

Long-term Debt: $180,000

Equity: $280,000

Determine the gross profit margin.

Calculate the debt-to-equity ratio.

Compute the return on assets (ROA).

Find the quick ratio.