REl sells snowboards. Assume the following information relates to REl's purchases of snowboards during September. During the same

month, $105$ snowboards were sold. REl uses a periodic inventory system.

$($a$)$

Compute the ending imventory at September $30$ using FIFO, LIFO, and average$-$cost$.($Round the average unit cost to $3$ decimal

places, e$.$g$.123\mathrm{.}234$ and final answers to $0$ decimal places, e$.$g$.125.)$