Apple Inc.

Item	Amount (in millions)
Revenue	$274,515
Cost of Goods Sold (COGS)	$169,559
Gross Profit	$104,956
Operating Expenses	$38,668
Operating Income	$66,288
Interest Expense	$2,000
Income Tax Expense	$11,000
Net Income	$53,288

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 $323,888 million, what is the return on assets (ROA)?
5. What is the return on equity (ROE) if Apple’s total equity is $65,339 million?