Depreciation computations. Alpha Alpha Alpha, a college fraternity, purchased a new heavy-duty washing machine on January 1, 20X3. The machine, which cost $2,000, had an estimated residual value of $100 and an estimated service life of 4 years (1,800 washing cycles). find out the following:

a. The machine's book value on December 31, 20X5, assuming use of the straight-line depreciation method

b. Depreciation expense for 20X4, assuming use of the units-of-output depreciation method. Actual washing cycles in 20X4 totaled 500.

c. Accumulated depreciation on December 31, 20X5, assuming use of the double-declining-balance depreciation method.