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 During the current year, Central   Auto Rentals purchased 60 new automobiles at a cost of $21,920 per car. The   cars will be sold to a wholesaler at an estimated $4,000 each as soon as they   have been driven 56,000 miles. Central Auto Rentals computes depreciation   expense on its automobiles by the units-of-output method, based on mileage. 
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