Question 1162071
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<pre>

Let X be that amount under the question.


Then your equation is


    100000 = {{{X*(1+0.06)^40}}},   or


    100000 = {{{x*1.06^40}}}.


Therefore, the answer is  


    X = {{{100000/1.06^40}}} = 9722.22   dollars.
</pre>

On compounded accounts, see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/percentage/lessons/Compound-interest-percentage-problem.lesson>Compounded interest percentage problems</A> 

in this site.


Learn the subject from there.