Littleton Books has the following transactions during May.

May $2$ Purchases books on account from Readers Wholesale for $$4,000,$ terms $1/10,$ n$/30.$

May $3$ Pays cash for freight costs of $$270$ on books purchased from Readers.

May $5$ Returns books with a cost of $$300$ 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 $$4,700$ 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.$)$

Record payment of the full amount due to Readers.

Record the sale of inventory on account.

Record cost of inventory sold.