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I am having trouble figuring out how to calculate this. Thank you for your help.

$$0.926 = \frac{\ln(1+0.8u)}{\ln(1+u)}$$

What does $u$ equal?

msarafzadeh
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    After some manipulations, solutions to this are solutions to the polynomial equation $(1+0.8u)^{1000}=(1+u)^{926}.$ The only obvious solution is $u=0,$ but this is not a solution to your equation. Maybe I'm missing some non-obvious trick, but I don't think you can find an exact answer. – Randy E Jan 26 '15 at 23:19

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If you use a method to approximate the value of u or WolframAlpha, you should get: 15.68427584

There doesn't seem to be a method to find an exact answer.

MasB
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