Martinez Corporation uses a periodic inventory system and the gross method of accounting for purchase discounts. On July 1, (1) Martinez purchased $90,000 of inventory, terms 2/10, 1/30, FOB shipping point. (2) Martinez paid freight costs of $1,280. (b) On July 3, Martinez returned damaged goods and received credit of $9,000. On July 10, Martinez paid for the goods. (c) July 10 Accounts Payable 81000 Cash Purchase Discounts