Depreciation by Units-of-activity Method Prior to adjustment at the end of the year, the balance in Trucks is $395,500 and the balance in Accumulated Depreciation-Trucks is $123,100. Details of the subsidiary ledger are as follows: Estimated Residual Value Accumulated Depreciation at Beginning of Year Estimated Useful Life Truck Miles Operated During Year No. Cost 1 $78,500 $11,775 200,000 miles 30,000 miles 2 110,000 13,200 420,000 $22,000 42,000 3 99,500 13,930 202,000 79,600 20,200 4 107,500 12,900 400,000 21,500 48,000 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. Miles Rate per Mile (in cents) Credit to Accumulated Depreciation Truck No. Operated 1 $ 78,500 30,000 2 42,000 3 20,200 4 48,000 Total