Depreciation by units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $405,800 and the balance in Accumulated Depreciation-Trucks is $120,060. Details of the subsidiary ledger are as follows: Miles Estimated Accumulated Depreciation at Beginning of Year Estimated Residual Value Truck Useful Life Operated During Year No. Cost 1 $80,000 $12,000 220,000 miles 33,000 miles 2 111,800 13,416 280,000 $22,360 28,000 3 91,500 12,810 200,000 $73,200 20,000 4 122,500 14,700 300,000 $24,500 36,000 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. rate per mile to two decimal places. Enter all as positive amounts. Miles Rate per Mile (in cents) Credit to Accumulated Depreciation Truck No. Operated 1 $ 33,000 2 s 28,000 3 S 20,000 $ 4 S 36,000 $ Total b. Journalize the entry to record depreciation for the year