$\backslash$table$[[$Date$,$Description,Units Purchased at Cost,Units Sold at Retai$],[$Sept$.1,$Beginning inventory,$400$ units @ $$19,],[10,$Purchase,$600$ units @ $$21,],[20,$Sales,,$620$ units @ $$36],[25,$Purchase,$800$ units at $$22,]]$

Calculate ending inventory and cost of goods sold using the FIFO, LIFO, and average cost methods.

$\backslash$table$[[,$FIFO,LIFO,Avg Cost$],[\backslash$table$[[$Cost of$],[$goods sold$]],$$$,$$$,$$