Selected comparative statement data for the giant bookseller Barnes & Noble are presented here. All balance sheet data are as of the end of the fiscal year (in millions).

Instructions
Compute the following ratios for 2006:
(a) Profit margin.
(b) Asset turnover.
(c) Return on assets.
(d) Return on common stockholders' equity.
(e) Gross profitrate.

2006 2005 $5,103.0 3,535.8 Nct sales Cost of goods sold Nc income Accounts receivable Inventory Total assets Total common stockholders' equity $5,261.3 3,623.0 150.5 100.5 1,354.6 3,196.8 1,164.9 146.7 99.1 1,314.0 3,156.3 1,115.8