Company: Apple Inc.

Item	Amount (in millions)
Revenue	$394,328
Cost of Goods Sold (COGS)	$213,963
Gross Profit	$180,365
Operating Expenses	$50,527
Operating Income	$129,838
Interest Expense	$3,600
Income Tax Expense	$20,000
Net Income	$106,238

Questions:

1. What is Apple's gross profit margin?
2. Calculate Apple's operating profit margin.
3. Determine Apple's net profit margin.
4. If Apple’s total assets are $351,000 million, what is the return on assets (ROA)?
5. What is the return on equity (ROE) if Apple’s total equity is $65,000 million?