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Periodic Inventory Using FIFO, LIFO, and Weighted Average Cost Methods

The units of an item available for sale during the year were as follows:

$\backslash$table$[[$Jan$.1,$Inventory,$9$ units at $$4,800,$$$43,200,,],[$Aug$.7,$Purchase,$20$ units at $$5,000,100,000,,],[$Dec$.11,$Purchase,$10$ units at $$5,100,51,000,,],[,,$units,$$194,200$