Cullumber Inc. uses a periodic inventory system. Its records show the following for the month of May, in which $76$ units were sold.

$($a$1)$

Your answer is correct.

Calculate the weighted$-$average unit cost. $($Round answer to $3$ decimal places, e$.$g$.5\mathrm{.}125.)$

Weighted$-$average unit cost $

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Attempts: $2$ of $5$ used

$($a$2)$

Your answer is incorrect.

Calculate the ending inventory at May $31$ using the FIFO, LIFO and average$-$cost methods. $($Round answers to $0$ decimal places, e$.$g$.$

$125.)$