Depreciation by Units-of-Activity Depreciation A diesel-powered tractor with a cost of $270,780 and estimated residual value of $6,800 is expected to have a useful operating life of 67,000 hours. During November, the tractor was operated 300 hours. Determine the depreciation for the month. Carry out any division to two decimal places. x Feedback Check My Work Units-of-production allocates the cost of the asset equally over the units produced. The depreciation rate stays constant