Dymac Appliances uses the periodic inventory system. Details regarding the inventory of appliances at January $1,$ purchases invoices during the next $12$ months, and the inventory count at December $31$ are summarized as follows:

Model Inventory,

January $1$

Purchases

Invoices $1$st

Purchases

Invoices $2$nd

Purchases

Invoices $3$rd Inventory Count,

December $31$

A$10\_\_4$ at $ $644$ at $ $704$ at $ $766$

B$158$ at $ $1764$ at $1583$ at $1706$ at $1848$

E$603$ at $753$ at $6515$ at $689$ at $705$

G$837$ at $2426$ at $2505$ at $26010$ at $2599$

J$3412$ at $24010$ at $24616$ at $26716$ at $27015$

M$902$ at $1082$ at $1103$ at $1283$ at $1305$

Q$705$ at $1604$ at $1704$ at $1757$ at $1808$

Required:

$1.$ Determine the cost of the inventory on December $31$ by the first$-$in$,$ first$-$out method.

If the inventory of a particular model comprises one entire purchase plus a portion of another purchase acquired at a different unit cost, use a separate line for each purchase. If units are in inventory at two different costs, enter the units PURCHASED MOST RECENTLY first. $2.$ Determine the cost of the inventory on December $31$ by the last$-$in$,$ first$-$out method.

If the inventory of a particular model comprises one entire purchase plus a portion of another purchase acquired at a different unit cost, use a separate line for each purchase. If units are in inventory at two different costs, enter the OLDEST units first. Determine the cost of the inventory on December $31$ by the weighted average cost method.