Answer:
Ending Inventory under LIFO $3,270
Explanation:
[tex]\left[\begin{array}{cccc}Month&Purchase&Sales&Remaining\\January&10&-6&4\\February&20&-5&15\\May&15&-9&6\\September&12&-8&1\\November&10&-13&0\\Total&67&-41&26\\\end{array}\right][/tex]
First: in LIFO you always start from the bottom line
subtracting the sales figure for each period.
Notice in nomvember the sales are greater than the amount purchased, so we decrease the september units by the diference
[tex]\left[\begin{array}{cccc}Month&Units&Cost&Subtotal\\January&4&120&480\\February&15&125&1,875\\May&6&130&780\\September&1&135&135\\November&0&140&0\\Total&26&-&3,270\\\end{array}\right][/tex]