Crane Novelty had a beginning inventory balance on July $1$ of $360$ units at a cost of $$2\mathrm{.}80$ each. During the month, the following inventory transactions took place:

$\backslash$table$[[,$Purchases,,Sales$],[$Date$,$Units,Cost per unit,,Date,Units,Price per unit$],[$July $10,1,310,$$$2\mathrm{.}90,,$July $2,280,$$$6\mathrm{.}20$