Jessica is in the market for a new car. She has narrowed her search down to 2 models. Model A costs $24,000 and Model B costs $18,000. With both cars she plans to pay cash and own them for 3 years before trading in for a new car. Her research indicates that the trade in value for Model A after 3 years is 50% of the initial purchase price, while the trade in value for Model B is 25%. Jessica has no emotional attachment to either model and wants to make a strictly financial decision. The interest rate is 6%. For simplicity assume that operating and maintenance costs for the models are identical every year. Which model is the better decision and how much "cheaper" is it than the alternative?