Problem 11-02 Your answer is partially correct. Try again. The cost of equipment purchased by Vaughn, Inc., on June 1, 2020, is $132,300. It is estimated that the machine will have a $6,300 salvage value at the end of its service life. Its service life is estimated at 7 years, its total working hours are estimated at 63,000, and its total production is estimated at 787,500 units. During 2020, the machine was operated 6,960 hours and produced 63,800 units. During 2021, the machine was operated 6,380 hours and produced 55,600 units. Compute depreciation expense on the machine for the year ending December 31, 2020, and the year ending December 31, 2021, using the following methods. (Round depreciation per unit to 2 decimal places, e.g. 15.25 and final answers to 0 decimal places, e.g. 45,892.) 2020 2021 (a) Straight-line 10500 18000 (b) Units-of-output 10208 8896 (c) Working hours 13920 12760 (d) Sum-of-the-years'-digits 18375 28875 (e) Double-declining-balance (twice the straight-line rate) I 37800 27000