Shamrock, Inc. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Shamrock, Inc.$\text{'}$s purchases of EZslide snowboards during September. During the same month, $103$ EZslide snowboards were sold. Shamrock, Inc. uses a periodic inventory system.

$\backslash$table$[[$Date$,$Explanation,Units,Unit Cost,Total Cost$],[$Sept$.1,$Inventory,$10,$$$111,$$$1,110$