A machine with a cost of $80,000 has an estimated residual value of $5,000 and an estimated life of 5 years or 15,000 hours. It is to be depreciated by the units-of-production method. What is the amount of depreciation for the second full year, during which the machine was used 5,000 hours? - $26,667 - $25,000 - $15,000 - $5,000