Shine King Cleaning has decided that, in addition to providing cleaning services, it will sell cleaning products. Shine King uses the perpetual inventory system. During December 2015, Shine King completed the following transactions:

Dec. 2 Purchased 600 units of inventory for $3,600 on account from Sparkle, Co. on terms, 3/10, n/20. 5 Purchased 400 units of inventory from Borax on account with terms 4/5, n/30. The total invoice was for $3,200, which included a $200 freight charge. 7 Returned 100 units of inventory to Sparkle from the December 2 purchase (cost $600). 9 Paid Borax. 11 Sold 350 units of goods to Happy Maids for $4,900 on account with terms 5/10, n/30. Shine King