Question 22 A machine with a cost of $484000 has an estimated salvage value of $20000 and an estimated useful life of 5 years or 16000 hours. It is to be depreciated using the units-of activity method of depreciation. What is the amount of depreciation for the second full year, during which the machine was used 4960 hours? $143840 $130040 $92800 $150040