Ivanhoe Novelty had a beginning inventory balance on July $1$ of $350$ units at a cost of $$3\mathrm{.}00$ 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 $10,1,540,$$$310,$July $2,270,$$$5\mathrm{.}80$