Depreciation by three methods; partial vears operating bours, and a residual value of $2,430. The equiponent was used for 1,400 hours dering Year 1,2,600 hours in Year 2, 2,700 hours in Yeat 3, ond 1,260 hours in Year 4 . Required: dollar. a. 5 itratuht line inethod b. Unite- of-activity method b. Units-of-activity method c. Double-declining-balance method feedbock Tcheo Mr Won: Agset cost minus residual value equals depreciable cost, Sum the yearly depreciation to determine total depreciation. Annual units of -output depreciation allocates the cost of the asset equally over the hours operated (hours) The double declining rate is two times the stralght ifne rate, Book vatue is the asset cost minus accumulated depreciation