The cot of equipment purchaed by Charleton, Inc. , on June 1, 2015, i €89,000. It i etimated that the machine will have a €5,000 reidual value at the end of it ervice life. It ervice life i etimated at 7 year; it total working hour are etimated at 42,000 and it total production i etimated at 525,000 unit. During 2015, the machine wa operated 6,000 hour and produced 55,000 unit. During 2016, the machine wa operated 5,500 hour and produced 48,000 unit. Intruction: Compute depreciation expene on the machine for the year ending December 31, 2015, uing the following method. (a) Straight-line. (b) Unit-of-output. (c) Working hour. (d) Sum-of-the-year’-digit. (e) Double-declining-balance