Company: Walmart Inc.

Walmart Inc. disclosed its financials for the fiscal year ending January 31, 2024. The company recorded total revenue of $550 billion, with a cost of goods sold (COGS) of $400 billion and operating expenses of $100 billion. Net income stood at $30 billion. Given this data: a) Calculate the gross profit margin. b) Determine the operating profit margin. c) Compute the net profit margin. d) Analyze the return on assets (ROA) if the company's total assets amount to $700 billion.