Gregs Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March. Greg's Bicycle Shop uses a periodic inventory system.

Using weighted-average cost, calculate ending inventory and cost of goods sold at March 31

Date	Transactions	Units	Cost per Unit	Total Cost
March 1	Beginning inventory	20	$250	$	5,000
March 5	Sale ($400 each)	15
March 9	Purchase	10	270		2,700
March 17	Sale ($450 each)	8
March 22	Purchase	10	280		2,800
March 27	Sale ($475 each)	12
March 30	Purchase	9	300		2,700
				$	13,200