Thompson sells a basketball, NBA, that is popular with basketball players. Below is information relating to Thompson's purchases of NBA baskeballs during September. During the same month, 118 NBA baskeballs were sold. Thompson uses a periodic inventory system.
Sept 1 Inventory 15 $97 $1,358
Sep 11 Purchases 30 102 $4,590
Sept 19 Purchase 20 104 $2,080
Sept 26 Purchases 40 105 5,250
105 13,278