<PRE><B>Question 192304</B>
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Let &lt;i&gt;&lt;b&gt;x&lt;/b&gt;&lt;/i&gt; represent the number of cars washed.  Then, since 75 vehicles were washed, the number of trucks washed must have been &lt;b&gt;75 - &lt;i&gt;x&lt;/i&gt;&lt;/b&gt;.


Since they charged $3 per car, the amount of money they made from washing cars was &lt;b&gt;3&lt;i&gt;x&lt;/i&gt;&lt;/b&gt;.  Likewise, the amount of money they made from washing trucks was *[tex \LARGE  5(75-x)]


The total of these two amounts must be the total amount they made, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 3x + 5(75 - x) = 275]


Solve for &lt;i&gt;&lt;b&gt;x&lt;/b&gt;&lt;/i&gt; to get the number of cars washed.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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