Working capital cash flow.Tires for Less is a franchise of tire stores throughout the greater Northwest. It has projected the unit sales and costs for each tire type for the next four months in the popup window:

	Snow Tires		Rain Tires		All-Terrain Tires		All-Purpose Tires
Cost per tire	$40		$30		$48		$35
Sales: January	40,000		19,000		5,000		61,000
Sales: February	38,000		34,000		4,100		54,000
Sales: March	13,000		45,000		9,000		51,000
Sales: April	2,100		20,000		9,000		65,000

. The company policy is to have the next month's anticipated sales for each tire type in the warehouse. Shipments are made to the various stores throughout the Northwest from the central warehouse. Calculate the monthly increase or decrease in cash flow for inventory for the first three months of the year given that an increase in inventory is a use of cash and a decrease in inventory is a source of cash.