On January 1, 2020, the Blue SA ledger shows Equipment 28,000 and Accumulated Depreciation-Equipment 9,100. The depreciation resulted from using the straight-line method with a useful life of 10 years and residual value of 2,100. On this date, the company concludes that the equipment has a remaining useful life of only 5 years with the same residual value. Compute the revised annual depreciation. Revised annual depreciation