(a)discovered that 4500 of the merchandise was defective and returned items, receiving credit then(b) purchased 3000of merchandise from harbin co.on account, received a check for the balance owed from the return in (a) after deducting for the purchase in (b)

Please see our guidelines for posting homework problems:

https://www.askmehelpdesk.com/financ...-b-u-font.html

Please show us that you've at least made an attempt to do the work yourself.