journalize the transactions assuming a perpetual inventory system

Journalize each of the following transactions assuming a perpetual inventory system. April 5 sold merchandise to a customer for $7,200; terms 2/10, n/30 (cost of sales $4,430). 7 Made a cash sale of $5,500 of merchandise to a customer today (cost of sales $3,460). 8 Sold merchandise for $12,800; terms 2/10, n/30 (cost of sales $7,840). 15 Collected the amount owing from the credit customer of April 5. May 4 The customer of April 8 paid the balance owing