Journalize each of the following transactions assuming a perpetual inventory system. April 5 Sold merchandise to a customer for $7,600; terms 3/10, n/30 (cost of sales $4,880). 7 Made a cash sale of $5,900 of merchandise to a customer today (cost of sales $3,860). 8 Sold merchandise for $13,200; terms 3/10, n/30 (cost of sales $8,240). 15 Collected the amount owing from the credit customer of April 5. May 4 The customer of April 8 paid the balance owing