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.

Date			Transactions	Units				Unit Cost				Total Cost
March	1		Beginning inventory		20			$	170				$	3,400
March	5		Sale ($240 each)		15
March	9		Purchase		10				190					1,900
March	17		Sale ($290 each)		8
March	22		Purchase		10				200					2,000
March	27		Sale ($315 each)		12
March	30		Purchase		9				220					1,980
													$	9,280

1. Calculate ending inventory and cost of goods sold at March 31, using the specific identification method. The March 5 sale consists of bikes from beginning inventory, the March 17 sale consists of bikes from the March 9 purchase, and the March 27 sale consists of four bikes from beginning inventory and eight bikes from the March 22 purchase.

2. Using FIFO, calculate ending inventory and cost of goods sold at March 31.

3. Using LIFO, calculate ending inventory and cost of goods sold at March 31.

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