Use the following information for the Quick Study below. $($Algo$)(11-14)$

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Trey Monson starts a merchandising business on December $1$ and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December $15,$ Monson sells $15$ units for $$24$ each.

Purchases on December $710$ units @ $$10\mathrm{.}00$ cost

Purchases on December $1420$ units @ $$16\mathrm{.}00$ cost

Purchases on December $2115$ units @ $$18\mathrm{.}00$ cost Question $1$:Determine the costs assigned to the December $31$ ending inventory based on the FIFO method. Question $2$: Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method. Question $3$: Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method.

Note: Round your per unit costs to $2$ decimal places. Question $4$:Of the units sold, $8$ are from the December $7$ purchase and $7$ are from the December $14$ purchase. Determine the costs assigned to ending inventory when costs are assigned based on specific identification.