You have the following information for Ivanhoe Inc. for the month ended October $31,2025.$ Ivanhoe uses a periodic system for inventory.

$($a$1)$

$-$ Your answer is correct.

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

Weighted$-$average cost per unit $\backslash (\backslash$quad $\backslash$$ $\backslash )$

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$2)$

Calculate ending inventory, cost of goods sold, and gross profit under each of the following methods.

$1.$ LIFO.

$2.$ FIFO.

$3.$ Average$-$cost$.$

$($Round answers to $0$ decimal places, e$.$g$.125.)$