Problem:
2010 and 2011 Balance Sheets for Nabors, Inc ($ millions)
2010 2011 2010 2011
Cash $310 $405 Accounts Payable $2,720 $2,570
Accounts Rec. 2640 3,055 Notes Payable 100 0
Inventory 3275 3,850 Long-Term Debt 7,875 8,100
Net Fixed Assets 10,960 10,670 Common Stock 5,000 5,250
Retained Earnings 1,490 2,060
Total Assets $17,185 $17,980 Total Liab. & Equity $17,185 $17,980
Question: What is the change in net working capital from 2010 to 2011?