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

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

$($a$)$

Compute the ending inventory 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$.125.)$

$($b$)$

Compute the cost of goods sold for the month using the FIFO, LIFO, and average$-$cost methods. $($Round average cost per unit to $3$ decimal places, eg$.125\mathrm{.}153$ and final answers to O decimal places, e$.$g$.125)$

FIFO $?$

LIFO?

AVERAGE$-$COST?