
Answer:
The Journal entry is as follows:
Interest Expense A/c  Dr. $36,000
Notes Payable A/c    Dr.  $600,000
To Cash                        $636,000
(To record the payment of note and interest at maturity)
Workings:
Interest Expense = $600,000 × (9 ÷ 12) × 8%
               = $600,000 × 0.75 × 0.08
               = $36,000