Perpetual Inventory Using LIFO

Beginning inventory, purchases, and sales for Item CZ$83$ are as follows:

$\backslash$table$[[$January $1,$Inventory,$108$ units @ $$15],[5,$Sale,$86$ units$],[11,$Purchase,$120$ units @ $$19],[21,$Sale,$101$ units$]]$

a$.$ Cost of merchandise sold on January $21$

b$.$ Inventory on January $31$

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