Answer:
The journal entry in the books of buyer is as follows:
Explanation:
Accounts Payable A/c.....................Dr $400
To Merchandise Inventory A/c......Cr $400
As the supplier offered him reduction in price instead of taking back the defective goods. So, the accounts payable account will be reduced by the amount which is reduced by the supplier in total amount of goods purchased by buyer. Therefore, the accounts payable account is debited and the account of merchandise inventory is credited.