Depreciation by units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $407,700 and the balatice in Accumulated Depreciation-Trucks is $120,140. Detalis of the subsidiar ledger are as follows: a. Determine for each truck the depreciation fate 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 decimai places. Enter all values as positive amounts. 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. Enter all values as positive amounts. T Check Whok Asset minus residual value equals depreciabie cost Units-of-production alocates the cost of the asset equaly over the units produced. The depreciation rate atays constant, no matior how many mies are drven each perod. Keep in mind that the depreciation taken cannot reduce the bock value of the truck below is residual value b. Journalize the entry to record depreciation for the year