July 12 Rockland sold merchandise to Kristina Zee at its factory store. Kristina paid for the $455 purchase in cash. The goods cost Rockland $265. 15 Sold merchandise to Shoe Express at a selling price of $9,500, with terms n/30. Rockland’s cost was $4,900. 23 Shoe Express returned $2,300 of the shoes purchased July 15. The returned shoes were in perfect condition and had cost Rockland $1,250. 31 Shoe Express paid the balance owing after July 15 and 23.