After the amount due on a sale of $7,500, terms 2/10, n/eom, is received from a customer

Question:

After the amount due on a sale of $7,500, terms 2/10, n/eom, is received from a customer within the discount period, the seller consents to the return of the entire shipment. The cost of the merchandise returned was $4,500.
(a) What is the amount of the refund owed to the customer?
(b) Journalize the entries made by the seller to record the return and the refund.