On September 1, Reid Supply had an inventory of 200 backpacks at a cost of $20 each. The company uses a perpetual inventory system. During September, the following transactions and events occurred. Sept. 4 Purchased 400 backpacks at $20 each from Hunter, terms 2/10,n/30. Sept. 6 Received credit of $800 for the return of 40 backpacks purchased on Sept. 4 that were defective. Sept. 9 Sold 300 backpacks for $40 each to Oliver Books, terms 2/10,n/30. Sept. 13 Sold 100 backpacks for $50 each to Heller Office Supply, terms n/30. Sept. 14 Paid Hunter in full, less discount. Instructions Journalize the September transactions for Reid Supply and compute the net sales