<PRE><B>Question 196226</B>
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She is exactly correct.  Here&#39;s why:


Let &lt;b&gt;&lt;i&gt;x&lt;/i&gt;&lt;/b&gt; represent the amount gained, then &lt;b&gt;2&lt;i&gt;x&lt;/i&gt;&lt;/b&gt; is the amount lost.  So he started with 10K added &lt;b&gt;&lt;i&gt;x&lt;/i&gt;&lt;/b&gt; and then subtracted &lt;b&gt;2&lt;i&gt;x&lt;/i&gt;&lt;/b&gt; leaving him with 8K, or:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 10000 + x - 2x = 8000]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 10000 - x = 8000]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x = 2000]



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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