Here is the question, the answers for EAV and NPV is given. im still not sure how to use EAV or NPV to find the best year to replace the car. show method please.

Year 1 Year 2 Year 3 Year 4 EAV example Running 3,000 3,600 3,800 5,200 costs. Resale value 13,000 10,000 7,300 8,500 Replacement of cars at end of year What is the optimum replacement period? Discount 12% rate 19,000 New Car costs 12% Compound Interest Factors 12 Single Payment Uniform Payment Series Arithmetic Gradient Gradient Gradient Present Sinking Compound Compound Capital resent Worth Fund Worth Uniform Present Amount Recovery Amount Factor Factor Factor Factor Worth Factor Factor Series Find F Find A Find F Find P Find A Find P Find A Find P Given A Given P Given F Given F Given P Given A Given G Given G FIP P/F A/F A/P FIA. P/A A/G P/G 0.893 1.120 .8929 200 000 5917 2.12 0.797 1.254 7972 4717 690 0.472 405 7118 .2963 4163 3.374 2.402 0.925 2.22 .574. 6355 2092 4.779 3.037 359 4.127 .3292