Need help with the units of activity method and double declining balance method

eBook Show Me How Comparing three depreciation methods Dexter Industries purchased packaging equipment on January 8 for $81,900. The equipment was expected to have a useful life of 3 years, or 20,000 operating hours, and a residual value of $4,500. The equipment was used for 7,600 hours during Year 1, 6,000 hours in Year 2, and 6,400 hours in Year 3. Required: 1. Determine the amount of depreciation expense for the 3 years ending December 31, by (a) the straight-line method, (b) the units-of-activity method, and (c) the double-declining-balance method. Also determine the total depreciation expense for the 3 years by each method. Do not round intermediate calculations when determining the depreciation rate. Round the final answers for each year to the nearest whole dollar. Depreciation Expense Straight-Line Units-of-Activity Double-Declining- Year Method Method Balance Method Year 1 25,800 Year 2 25,800 Year 3 25,800 Total 77,400 V