E6-15 Comparing inventory methods Super Mart, a regional convenience store chain, maintains milk inventory by the gallon. The first month's milk purchases and sales at its Freeport, Florida, location follow: Nov. 2 6 8 13 14 Purchased 11 gallons @ $2.15 each Purchased 2 gallons @ $2.80 each Sold 6 gallons of milk to a customer Purchased 3 gallons @ $2.85 each Sold 4 gallons of milk to a customer

E6-15 Comparing inventory methods Super Mart, a regional convenience store chain, maintains milk inventory by the gallon. The first month's milk purchases and sales at its Freeport, Florida, location follow: Nov. 2 Purchased 11 gallons \&\$2.15 each 6 Purchased 2 gallons @$2.80 each 8 Sold 6 gallons of milk to a customer 13 Purchased 3 gallons @ $2.85 each 14 Sold 4 gallons of milk to a customer