Based on the financial statements of AutoTech Inc. for the years ended December 31, 2023, 2022, and 2021, provide answers to the following:

AutoTech Inc. Comparative Income Statements for Years Ended December 31, 2023, 2022, and 2021:

• Sales: 2023: $950,000, 2022: $800,000, 2021: $700,000
• Cost of Goods Sold: 2023: $400,000, 2022: $350,000, 2021: $300,000
• Gross Profit: 2023: $550,000, 2022: $450,000, 2021: $400,000
• Operating Expenses: 2023: $200,000, 2022: $150,000, 2021: $100,000
• Net Income: 2023: $350,000, 2022: $300,000, 2021: $250,000

AutoTech Inc. Comparative Balance Sheets as of December 31, 2023, 2022, and 2021:

• Total Assets: 2023: $1,500,000, 2022: $1,200,000, 2021: $1,000,000
• Total Liabilities: 2023: $600,000, 2022: $500,000, 2021: $400,000
• Shareholders' Equity: 2023: $900,000, 2022: $700,000, 2021: $600,000

Requirements:

1. Compute the gross profit margin for each year.
2. Calculate the return on equity (ROE) for each year.
3. Determine the current ratio for 2023 if current assets are $700,000 and current liabilities are $400,000.
4. Compute the net profit margin for each year.
5. Analyze the trend in liquidity over the three years.