
Answer:
The Adjustment Entry for accrual of Interest Expense will be as follows:
                       Dr.    Cr.
Interest Expense         $840
Interest accrued Payable        $840
Explanation:
Interest per day = $28
Interest expense for the Month = $28 x 30 = $840
$840 of Interest expense will be accrued at the end of the month and it should be adjusted accordingly.