Answer: $42,000
Step-by-step explanation:
Using a straight line Depreciation method means that the Equipment will be depreciated uniformly throughout it's life. i.e by the same amount.
Depreciation = (Cost - Residual Value) / Useful Life
= (483,000 - 63,000) / 10
= 420,000/10
= $42,000
The annual Depreciation amount for Year 1 - 3 is $42,000 and will be the same as long as the Equipment is in service.