Depreciation by Units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $402,000 and the balance in Accumulated Depreciation-Trucks is $124,100 Details of the subsidiary ledger are as follows: Accumulated Miles Estimated Estimated Depreciation Operated Truck Residual Useful at Beginning During No. Cost Value Life of Year Year 1 $86,000 $12.900 210,000 miles 31,500 miles 2 114,500 13,740 39,000 NM 3 101,500 14,210 390,000 207,000 270,000 $22.900 81,200 20,000 20,700 32,400 4 100,000 12,000 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. Credit to Rate per Mile Miles Accumulated Truck No. (in cents) Operated Depreciation 1 31,500 39,000 2 20,700 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. Credit to Rate per Mile Miles Accumulated Truck No. (in cents) Operated Depreciation 31,500 1 2 39,000 3 20,700 4 32,400 Total b. Journalize the entry on December 31 to record depreciation for the year. If an amount box does not require an entry, leave it blank