document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=808700>Question 808700</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A family drove to Las Vegas at an average speed of 65mph and returned via the same route at a speed of 70mph. Find the time it took to drive to Las Vegas if the total time was 27 hours. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487149 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=487149\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> _________speed__________________time_________________distance<BR>\n" );
document.write( "_________65_____________________x____________________65x<BR>\n" );
document.write( "_________70_____________________y____________________70y<BR>\n" );
document.write( "Total___________________________27___________________65x+70y\r<BR>\n" );
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document.write( "You want one variable, not two.  <BR>\n" );
document.write( "x+y=27 so maybe, y=27-x.  Try this instead of \"y\".\r<BR>\n" );
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document.write( "_________speed__________________time____________________distance<BR>\n" );
document.write( "_________65_____________________x_______________________65x<BR>\n" );
document.write( "_________70_____________________27-x____________________70(27-x)<BR>\n" );
document.write( "Total___________________________27______________________65x+70(27-x)\r<BR>\n" );
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document.write( "The given information still does not seem enough.<BR>\n" );
document.write( "Note, the distance both ways is the same, as described.\r<BR>\n" );
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document.write( "Let this distance be d.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%2865x=70%2827-x%29%29 ALIGN=MIDDLE  ALT=\"highlight%2865x=70%2827-x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for x and you can compute distance for either direction.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65x=70%2A27-70x ALIGN=MIDDLE  ALT=\"65x=70%2A27-70x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65x%2B70x=70%2A27 ALIGN=MIDDLE  ALT=\"65x%2B70x=70%2A27\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Divide b.s. by 5,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13x%2B14x=14%2A27 ALIGN=MIDDLE  ALT=\"13x%2B14x=14%2A27\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=27x=14%2A27 ALIGN=MIDDLE  ALT=\"27x=14%2A27\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=14%29 ALIGN=MIDDLE  ALT=\"highlight%28x=14%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "That much could well have been done using two variables, x and y and we would have had a system of two equations.\r<BR>\n" );
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document.write( "Use either distance expression with x=14 and find the distance:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65%2Ax=65%2A14=highlight%28910%29 ALIGN=MIDDLE  ALT=\"65%2Ax=65%2A14=highlight%28910%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > miles </SPAN>\n" );
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