Brewton Freight Company owns a truck that cost $36,000. Currently, the trucks book value is $28,000, and its expected remaining useful life is four years. Brewton has the opportunity to purchase for $21,000 a replacement truck that is extremely fuel efficient. Fuel cost for the old truck is expected to be $5,300 per year more than fuel cost for the new truck. The old truck is paid for but, in spite of being in good condition, can be sold for only $18,000.