Requirement 1:
Date Accounts Debit Credit
Sept. 1 Patent $240,000
Cash $240,000
Explanation: Purchased a patent for cash.
Requirement 2:
The annual amortization expense for the patent can be calculated as follows:
Amortization expense = (Cost of patent - Salvage value) / Useful life
where Cost of patent = $240,000, Salvage value = $0 and Useful life = 8 years.
Amortization expense = ($240,000 - $0) / 8 = $30,000 per year
Date Accounts Debit Credit
Dec 31 Amortization expense $30,000
Accumulated amortization - Patent $30,000
Explanation: Recorded annual amortization expense for the patent using straight-line method.