A small manufacturing company is evaluating trucks for delivering their products. Truck A has a first cost of $22,000, its operating cost will be $5500 per year, and its salvage after 3 years will be $7000. Truck B has a first cost of $27,000, an operating cost of $5200, and a resale value of $12,000 after 4 years. At an interest rate of 15% per year, which model should be chosen if an annual worth analysis is performed? Contributed by Hamed Kashani, Saeid Sadri, and Baabak Ashuri, Georgia Institute of Technology