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Required information

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

$[$The following information applies to the questions displayed below.$]$

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 $$20$ each.

Purchases on December $7,10$ units @ $ $6$ cost

Purchases on December $1420$ units $ $$12$ cost

Purchases on December $21,15$ units $ $$14$ cost