South Coast Appliance Store is a small company that has hired you to perform some management advisSales $(4,500$ microwave ovens$)$Cost of goods soldStore manager's salary per yearOperating costs per yearAdvertising and promotion per yearCommissions $(3\mathrm{.}5\%$ of sales$)$$$4,500,000765,000120,000275,00031\mathrm{.}825157,500$What was the variable cost per unit sold for $2020?$