P11-11 (L01,2) (Depreciation for Partial PeriodsSL, Act., SYD, and DDB) On January 1, 2015, a machine was purchased for $90,000. The machine has an estimated salvage value of $6,000 and an estimated useful life of 5 years. The machine can operate for 100,000 hours before it needs to be replaced. The company closed its books on December 31 and operates the machine as fol- lows: 2015, 20,000 hours; 2016, 25,000 hours; 2017, 15,000 hours; 2018, 30,000 hours; and 2019, 10,000 hours. a) Compute the annual depreciation charges over the machines life assuming a December 31 year-end for each of the fol- lowing depreciation methods. 1) Straight-line method. 2) Sum-of-the-years-digits method 3) Double-declining-balance method 4) Activity Method. (b) Assume a fiscal year-end of September 30.Compute the annual depreciation charges over the assets life applying each of the following methods. 1) Straight-line method. 2) Sum-of-the-years-digits method. 3) Double-declining-balance method