Current Attempt in Progress REI sells snowboards. Assume the following informstion relates to ReI's purchases of snowboards during September. During the same month, $106$ snowboards were sold. REl uses a periodic inventory systemCompute the ending inventory at September $30$ using FFFO, LIFO, and average$-$cost$.($Round averoge cost per unit to $3$ decimal ploces, e$.$g$.\backslash (125\mathrm{.}153\backslash )$ and final answers to $0$ decimal places, e$\mathrm{.}8.125.)$ eTextbook and Media Attempts: $0$ of $2$ used