Depreciation by Units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $424,100 and the balance in Accumulated Depreciation-Trucks is $131,820. Details of the subsidiary ledger are as follows: Accumulated Depreciation Truck Estimated Residual Estimated Miles Operated No. Cost Value Useful Life at Beginning of Year During Year 1 $78,500 $11,775 240,000 miles 36,000 miles 2 113,600 13,632 250,000 $22,720 25,000 3 4 104,500 127,500 14,630 15,300 216,000 83,600 21,600 350,000 25,500 42,000 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. Truck No. Rate per Mile (in cents) Miles Operated Credit to Accumulated Depreciation 1 36,000 2 25,000 3 4 21,600 42,000 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