document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=3402>Question 3402</A>: <I><SPAN STYLE=\"word-break: break-all;\">  I've tried many times to find the answer... and I've also never had a real big thing for math that's why I'm in summer school right now... If I could get any help at all it would be great, and maybe a brief x-pla. on how it's to be done<BR>\n" );
document.write( "\"A theater sells children's tickets for $4 and adult tickets for $7. One night 575 tickets worth $3575 were sold.<BR>\n" );
document.write( "How many adults and children bought tickets\"<BR>\n" );
document.write( "Thanks Many<BR>\n" );
document.write( "Matt McIvor </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #1481 by </B><A HREF=/tutors/aboutme.mpl?userid=drglass><B>drglass(89)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drglass><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=1481\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Basically  the same way you would solve otherwise.<br><BR>\n" );
document.write( "3x-2.5y=7.125<br><BR>\n" );
document.write( "2.5x-3y=7.3125<br>\r<BR>\n" );
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document.write( "You should eleminate x or y and there is no particular advantage in picking one or the other in this case. So, let's pick x and use elimination:<br><BR>\n" );
document.write( "Multiply the first equation by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2.5%2F3 ALIGN=MIDDLE  ALT=\"-2.5%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > and we get:<br>\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-2.5%2F3%29%2A3x-%28-2.5%2F3%29%2A2.5y=%28-2.5%2F3%29%2A7.125+or%3Cbr%3E%0D%0A%7B%7B%7B-2.5x+%2B+%286.25%2F3%29y+=+-5.9375 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><br>\r<BR>\n" );
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document.write( "Now add this to the second equation and we get<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-%282.75%2F3%29y+=+1.375 ALIGN=MIDDLE  ALT=\"-%282.75%2F3%29y+=+1.375\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Divide either side by -2.75/3 and we get y = -1.5. Substitute this value of y in to the first equation and we get x = 1.125.<BR>\n" );
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document.write( "It is important to verify these numbers using the original equations:<br><BR>\n" );
document.write( "3x-2.5y=7.125 and <br><BR>\n" );
document.write( "2.5x-3y=7.3125<br><BR>\n" );
document.write( "become<BR>\n" );
document.write( "3(1.125)-2.5(-1.5) = 3.375 + 3.75 = 7.125 and <br><BR>\n" );
document.write( "2.5(1.125)-3(-1.5) = 2.8125 + 4.5 = 7.3125<br> </SPAN>\n" );
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