In this question why would you record the first sale by doing 260x15=3900 and then 90x11=990 when its using the LIFO method. the last-in would be the beginning inventory so why wouldnt you find 250x11=2750 and then 100x15=1500???? does it have to do with the periodic vs perpetual inventory recording methods? i am confused

Filimonov Inc. has the following information related to purchases and sales of one of its inventory items:

Date	Description		Units Purchased at Cost	Units Sold at Retail
June 1		Beginning inventory	250 units @ $11 = $2,750
9		Purchase 1	260 units @ $15 = $3,900
14		Sale 1		350 units @ $25
22		Purchase 2	300 units @ $18 = $5,400
29		Sale 2		290 units @ $25

Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system.

Required:

Calculate the cost of goods sold and the cost of ending inventory using the LIFO inventory costing method.