Case X			Case Y			Case Z
Cash		$	1,800		$	120		$	1,000
Short-term investments			0			0			400
Current receivables			150			400			400
Inventory			1,900			1,800			2,500
Prepaid expenses			200			500			900
Total current assets		$	4,050		$	2,820		$	5,200
Current liabilities		$	2,000		$	1,210		$	3,000

Compute the current ratio and acid-test ratio for each of the following separate cases.