Gregs Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March 2015. Greg's Bicycle Shop uses a periodic inventory system.

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
1.Calculate ending inventory and cost of goods sold at March 31, 2015, 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, 2015. 3.Using LIFO, calculate ending inventory and cost of goods sold at March 31, 2015. 4. Using LIFO, calculate ending inventory and cost of goods sold at March 31, 2015. 5.Calculate sales revenue and gross profit under each of the four methods. 6. If Gregs Bicycle Shop chooses to report inventory using LIFO instead of FIFO, record the LIFO adjustment. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)