Marlow Company uses a perpetual inventory system. During the year, it entered into the following purchases and sales transactions. DateActivitiesUnits Acquired at CostUnits Sold at Retail Jan$\mathrm{.}1$ Beginning inventory $800$units@ $$44$ per unit Feb$\mathrm{.}10$ Purchase $250$units@ $$40$ per unit Mar$\mathrm{.}13$ Purchase $200$units@ $$20$ per unit Mar$\mathrm{.}15$ Sales $450$units@ $$75$ per unit Aug$\mathrm{.}21$ Purchase $210$units@ $$60$ per unit Sept$\mathrm{.}5$ Purchase $330$units@ $$48$ per unit Sept$\mathrm{.}10$ Sales $350$units@ $$75$ per unit Totals $1,790$units $800$units