Answer:
$480,000
Step-by-step explanation:
The basis for the amortization (or charge to p/l) of the patent will be the estimated life of 10 years.
As such, the charge to the income statement yearly (which is the result the cost divided by the useful life)
= $960,000/10
= $96,000
Between January 2013 and the start of 2018 is 5 years. Hence the accumulated amortization on this patent
= $96,000 * 5
= $480,000
The carrying amount of the patent as at then
= $960,000 - $480,000
= $480,000
Since during 2018 the product was permanently removed from the market under governmental order because of a potential health hazard present in the product as such the amortization expense for 2018 will be equivalent to the the carrying amount which is to be expensed or written off.