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Units-of-Activity Depreciation A trusk acquired at a cost of $380,000 has an estimated residual value of $22,500, has an estimated useful life of 50,000 miles, and was driven 4,500 miles cunng the vear, Defirmine the following. If required, round your answer for the depreciation rate to two decimal places. finobe: Tcwen My Woik Depreciable cost is the defference between the osset's initial cost and its residual value. The recidual value is the estimated value at the end of the useffal aff. Annual units of-production depreclation aliocates the cost of the asset equaliy ever the expected productive capocity