using lifo and fifo. also, perpetual and periodic

Compute ending inventory and cost of goods sold using the following: Purchases June 1 (balance on hand) 2 7 15 20 2,000 @ $10.00 1,500 @ 10.05 600 @ 10.50 900 @ 11.00 1,200 @ 11.00 300 @ 11.10 6,500 June 5 8 9 18 30 Sales 500 @ $21.00 1,600 @ 22.00 700 @ 22.00 1,800 @21.00 700 @ 23.00 5,300 27