Use the following information to answer the questions:

Assets			Liabilities and Equity
Cash	9,000		Accounts payable	21,000
Marketable securities	2,000		Notes payable	6,000
Accounts receivable	3,000		Current liabilities	27,000
Inventory	43,000		Long-term debt	95,000
Current assets	57,000		Total liabilities	122,000
Machines	34,000		Paid-in capital	20,000
Real estate	80,000		Retained earnings	29,000
Fixed assets	114,000		Equity	49,000
Total assets	171,000		Total liab. & equity	171,000

What is the quick ratio (aka the acid test)?