Montoure Company uses a perpetual inventory system. It entered into the following calendar$-$year purchases and sales transactions.

Required:

Compute cost of goods available for sale and the number of units available for sale.

$\backslash$table$[[$Cost of goods available for sale,,$],[$Number of units available for sale,,units$]]$

Compute the number of units in ending inventory.

Ending inventory

units

Compute the cost assigned to ending inventory using

$($a$)$ FIFO,

$($b$)$ LIFO,

$($c$)$ weighted average, and

$($d$)$ specific identification.

$($For specific identification, units sold consist of $600$ units from beginning inventory, $300$ from the February $10$ purchase, $200$ from the March $13$ purchase, $50$ from the August $21$ purchase, and $250$ from the September $5$ purchase.$)$