ECON 4400 Lecture Notes - Liquid Oxygen

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The length of time to quadruple your money is: Fv = = (1. 07)t t = ln 4 / ln 1. 07 = 20. 49 years. Notice that the length of time to quadruple your money is twice as long as the time needed to double your money (the difference in these answers is due to rounding). This is an important concept of time value of money. 8. (lo3) to answer this question, we can use either the fv or the pv formula. Solving for r, we get: r = (fv / pv)1 / t 1 r = (,958 / ,641)1/5 1 = 4. 81% 9. (lo4) to answer this question, we can use either the fv or the pv formula. Solving for t, we get: t = ln(fv / pv) / ln(1 + r) t = ln (,000 / ,000) / ln 1. 053 = 28. 02 years. 10. (lo2) to find the pv of a lump sum, we use:

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