depreciation by units-of-activity method a diesel-powered tractor with a cost of $120,000 and an estimated residual value of $16,400 is expected to have a useful operating life of 28,000 hours. during april, the tractor was operated 150 hours. determine the depreciation for the month. carry out any division to two decimal places. $fill in the blank 1 feedback area feedback units-of-activity method allocates the cost of the asset equally over the hours operated. the depreciation rate stays constant. brainly