Depreciation by Units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $414,200 and the balance in Accumulated Depreciation-Trucks is $127,440. Details of the subsidiary ledger are as follows: Truck No. Cost Estimated Residual Value Estimated Useful Life Accumulated Depreciation at Beginning Miles Operated During of Year Year 1 $84,500 $12,675 230,000 miles 34,500 miles 2 117,200 14,064 380,000 $23,440 38,000 3 102,500 14,350 217,000 82,000 21,700 4 110,000 13,200 420,000 22,000 50,400 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 Accumulated Depreciation Truck No. Rate per Mile (in cents) Miles Operated 1 34,500 2 3 38,000 21,700 50,400 Total b. Journalive the entry on December 31 to record depreciation for the year. If an amount box does not require an entry, leave it blank Previous