Littleton Books has the following transactions during May.

May		2		Purchases books on account from Readers Wholesale for $2,600, terms 1/10, n/30.
May		3		Pays cash for freight costs of $130 on books purchased from Readers.
May		5		Returns books with a cost of $200 to Readers because part of the order is incorrect.
May		10		Pays the full amount due to Readers.
May		30		Sells all books purchased on May 2 (less those returned on May 5) for $3,300 on account.

Required:

1. Record the transactions of Littleton Books, assuming the company uses a perpetual inventory system. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.)

Question: record cost of inventory sold

note: the answer 2,400 as posted in another answer does not work