Depreciation by units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $417,200 and the balance in Accumulated Depreciation-Trucks is $127,440. Details of the subsidiary ledger are as follows: Truck Estimated Residual No. Cost Value Estimated Useful Life Accumulated Depreciation Miles Operated at Beginning of Year During Year 1 $81,500 $12,225 220,000 miles 33,000 miles 2 112,700 13,524 260,000 $22,540 26,000 3 100,500 14,070 202,000 $80,400 20,200 4 122,500 14,700 380,000 $24,500 45,600 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. 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. Truck No. Rate per Mile (in cents) Miles Credit to Accumulated Operated Depreciation 1 33,000 2 26,000 3 20,200 4 45,600 Total b. Journalize the entry to record depreciation for the year.