Shown below are account balances for Electra Engines Inc., a manufacturer. The accounts are shown in a random order.

What is the amount of net working capital?

	Account Balance
Property, Plant & Equipment	$ 500,000
Accounts Payable	$ 6,000
Intangible Assets	$ 5,000
Cash	$ 10,000
Marketable Securities (maturing in 6 months or less)	$ 30,000
Retained Earnings	$ 25,000
Interest Payable	$ 2,000
Notes Payable (due in 24 months)	$ 10,000
Accounts Receivable	$ 20,000
Notes Payable (due in 6 months)	$ 20,000
Common Stock	$ 45,000
Dividends Payable	$ 3,000
Inventory	$ 50,000