Jessica is in the market for a new car. She has narrowed her search down to 2 models. Model A costs $20,000 and Model B costs $18,000. With both cars she plans to pay cash and own them for 5 years before trading in for a new car. Her research indicates that the trade in value for Model A after 5 years is 50% of the initial purchase price. 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
Base Value: 20000
Trade in value after 5 years : 50% = 10000
PV of 10000 = 7472.58
Base Value: 18000
Trade in value after 5 years : 25% = 4500
PV of 4500 = 3362.66
Also, If invested in Model B, Jessica saves 2000. So, PV of investment in Model B is 3362.66 + 2000 = 5562.66 So, Jessica gains 2109.92 if she invests in Model A
Christine is a new homebuyer. She wants to make sure that she incorporates the cost of maintenance into her decision. She estimates that routine repairs and maintenance on the home she is considering will be $1,590 in the first year (one year from now). Due to the increasing age of the home, she expects that maintenance costs will increase 6% annually. The interest rate is 5%. If she plans to be in the home for 10 years, what is the present value of all future maintenance? (Note that maintenance costs will change annually, and starts one year from now and she plans to do the last one before selling her house.) 15000
Year ============ Cost ============= Present Value
1 ============== $ 1590 ============ $ 1590/1.05
2 ============== $ 1590 * 1.06 ======== $ 1590 * 1.06 / (1.05 * 1.05) ... ============= ... =============== ...
10 ============= $ 1590 * power 9 of 1.06 = $ 1590 * power 9 of 1.06/power 10...
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