Step-by-step explanation:
The company acquired a machine on January 1 at an original cost of $ 81,000. The machine’s estimated residual value is $ 15,000, and its estimated life is 20,000 service hours. The actual usage of the machine was as follows:
Year 1 9,000 hours
Year 2 5,000 hours
Year 3 4,000 hours
Year 4 2,000 hours