MNO Pharmaceuticals has provided the following financial information for the year 2023:

Income Statement:

Revenue: $300,000

Cost of Goods Sold: $150,000

Operating Expenses: $90,000

Interest Expense: $20,000

Tax Expense: $10,000

Balance Sheet:

Total Assets: $500,000

Total Liabilities: $300,000

Shareholders' Equity: $200,000

Requirements:

Calculate the gross profit margin.

Determine the operating profit margin.

Compute the net profit margin.

Assess the return on assets (ROA).

Evaluate the return on equity (ROE).