47. Starbucks Corporation reported the following financial information for the year ending December 31, 2023:
48. 
    
    • Total Revenue: $50 billion
    • Cost of Goods Sold (COGS): $20 billion
    • Operating Expenses: $20 billion
    • Other Income: $2 billion
    • Tax Expense: $8 billion

a) Calculate the gross profit. b) Determine the operating profit. c) Compute the net profit before tax. d) Calculate the net profit after tax, assuming a tax rate of 16%.