RZM Store sells jeans. During January 2014, its inventory records for one brand of designer jeans were as follows: Quantity Price per pair Total Beginning Inventory 10 pairs $20 200 January 6 Purchase 4 pairs $ 25 =$100 January 10 Sale 5 pairs N / A January 15 Purchase 7 pairs $30 =$210 January 20 Sale 10 pairs N/A January 25 Purchase 4 pairs $30 The cost of goods sold using the periodic average cost method is