The following information is available for Massey Company:
Beginning inventory               600 units at $5
First purchase                        900 units at $6
Second purchase                   500 units at $7
Assume that Massey uses a periodic inventory system and that there are 700 units left at the end of the month. Total sales amounted to $30,000
Instructions 
Journalize sale of inventory on account (use FIFO for CGS)