I cannot figure out July 30th.

July Purchased merchandise from Boden Company for $6,300 under credit terms of 2/15, n/30, FOB shipping point, invoice dated July 1. 2 Sold merchandise to Creek Co. for $900 under credit terms of 2/10, n/60, FOB shipping point, invoice dated July 2. The merchandise had cost $525. 3 Paid $125 cash for freight charges on the purchase of July 1 8 Sold merchandise that had cost $1,600 for $2,000 cash. 9 Purchased merchandise from Leight Co. for $2,900 under credit terms of 2/15, n/60, FOB destination, invoice dated July 9 11 Received a $900 credit memorandum from Leight Co. for the return of part of the merchandise purchased on July 9. 12 Received the balance due from Creek Co. for the invoice dated July 2, net of the discount. 16 Paid the balance due to Boden Company within the discount period. 19 Sold merchandise that cost $1,000 to Art Co. for $1,500 under credit terms of 2/15, n/60, FOB shipping point, invoice dated July 19 21 Issued a $250 credit memorandum to Art Co. for an allowance on goods sold on July 19. 24 Paid Leight Co. the balance due, net of discount. 30 Received the balance due from Art Co. for the invoice dated July 19, net of discount. 31 Sold merchandise that cost $5,100 to Creek Co. for $7,400 under credit terms of 2/10, n/60, FOB shipping point, invoice dated July 31 14 July 24 Accounts payable-Leight 2,000 4 Merchandise inventory Cash 1,960 15 July 30 Cash 1,040 Sales discounts 260 Accounts receivable-Art 1,300 16 July 31 Accounts receivable-Creek 7,400 Sales 7,400 17 July 31 Cost of goods sold 5,100 5,1000 Merchandise inventory