Periodic inventory system is usually determine the cost of center and inventory when cost our assigned based on the weighted average method a company reports tge gollowing begining inventory snx $2$ purchases of the month of January. On January $26$ the company sells $370$ units endinh January $31150$ units. Beging invrntory january $300$ units at $$3\mathrm{.}20$ purchase January $980$ units at $$3\mathrm{.}40$ purchase in January $25110$ units