On January 15, Tundra Co. sold merchandise to customers for cash of $41,000 (cost $28,000). Merchandise costing $10,600 was sold to customers for $15,600 on January 17; terms 2/10, n/30. Sales totalling $299,200 (cost $203.000) were recorded on January 20 to customers using MasterCard; assume the credit card charges a 2% fee. On January 25, sales of $74,000 (cost $49,800) were made to debit card customers. The bank charges Tundra a flat fee of 0.5% on all debit card transactions. Required: Prepare journal entries for each of the transactions described (assume a perpetual Inventory system).