<PRE><B>Question 762533</B>
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The cost of *[tex \LARGE x] shirts is *[tex \LARGE 25x].  The cost of *[tex \LARGE y] ties is *[tex \LARGE 10y].  The total amount spent has to be


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 25x\ +\ 10y\ \leq\ 770]


If you buy four times as many shirts as ties, then


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ =\ 4y]


There is your system.  I recommend you solve by substitution.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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