Journalie the following transactions. Assume the perpetual inventory system. can some do this on an excel for me!?

Journalize the following transactions. Assume a perpetual inventory system. 202X Jul. 8 Sold merchandise on account, $630, to Ring Co.; terms 3/10,n/30. Cost of merchandise was $390. 12 Purchased office equipment on account from MEC Co., $1,600. 13 Made refunds to cash customers, $200, for defective merchandise. The cost of defective merchandise was $25