Kingbird Company purchased machinery for $161,700 On January 1, 2017. It is estimated that the machinery will have a useful life of 2o years, salvage value of $14,700, production of 83,000 units, and working hours of 40,100. During 2017, the company uses the machinery for 10,827 hours, and the machinery produces 9,960 units. Compute depreciation under the straight-line, units - of- outputs, working hours, sum-of-the-years digits, and double-declining-balance methods.

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