Question 1187529
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To see many other similar  (and different)  solved problems,  look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/logarithm/Problems-on-appreciated-depreciated-values.lesson>Problems on appreciated/depreciated values</A> 

in this site.


Learn the subject from there.



By the way, &nbsp;at the end of this lesson, &nbsp;you will find the set of links to other lessons on typical logarithmic and exponential

word problems: &nbsp;population growth, &nbsp;radioactive decay, &nbsp;carbon dating, &nbsp;bacteria growth, &nbsp;medication decay etc.


It is a nice place to learn all these subjects in one package, &nbsp;presented in compact and clear form &nbsp;(&nbsp;!&nbsp;)