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Depreciation by Units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $406,100 and the balance in Accumulated DepreciationTrucks is $123,420. Details of the subsidiary ledger are as follows: a. Determine for each truck the depreciation rate per mile and the amount to be credited to the accumulated depreciation section of each subsidiary account for the miles operated during the current year. Keep in mind that the depreciation taken cannot reduce the book value of the truck below its residual value. Round the rate per mile to two decimal places. Check My Work Asset minus residual value equals depreciable cost. Units-of-production allocates the cost of the asset equally over the units produced. The depreciation rate stays constant, no matter how many miles are driven each period. Keep in mind that the depreciation taken cannot reduce the book value of the truck below its residual value. Journalize the entry on December 31 to record depreciation for the year. If an amount box does not require an entry, leave it ank