On January 1, 2017, a machine was purchased for $120,000. The machine has an estimated salvage value of $6,000 and an estimated useful life of 6 years. The machine can operate for 200,000 hours before it needs to be replaced. The company closed its books on December 31 and operates the machine as follows: 2017, 35,000 hrs; 2018, 45,000 hrs; 2019, 55,000 hrs; 2020,30,000hrs;2021,20,000hrs;2022,15,000hrs. Instructions (a) Compute the annual depreciation charges over the machine's life assuming a December 31 year-end for each of the following depreciation methods: (1) Straight-line method. (2) Activity method. (3) Sum-of-the-years'-digits method. (4) Doubledeclining-balance method. (b) Assume a fiscal year-end of March 31. Compute the annual depreciation charges over the asset's life applying each of the following methods: (1) Straight-line method. (2) Sum-of-theyears'-digits method. (3) Double-declining-balance method