Company: Alibaba Group Holding Limited

Alibaba Group Holding Limited disclosed its financial performance for the fiscal year ending March 31, 2024. The company reported total revenue of $150 billion, with a cost of goods sold (COGS) of $70 billion and operating expenses of $40 billion. Net income stood at $40 billion. Given this information: a) Calculate the gross profit margin. b) Determine the operating profit margin. c) Compute the net profit margin. d) Analyze the return on investment (ROI) if the company's total investment is $100 billion.