document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188954>Question 188954</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is the question I am having trouble with:\r<BR>\n" );
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document.write( "In his boat, Carl takes 1 and 1/2 times longer to go 72 miles upstream as it takes for him to make the return trip downstream.  If the boat cruises at 30mph in still water, what is the speed of the current?  \r<BR>\n" );
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document.write( "Thanks for any help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141748 by </B><A HREF=/tutors/aboutme.mpl?userid=jonvaliente><B>jonvaliente(64)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jonvaliente><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/cgi-bin/show-face.mpl?user=jonvaliente><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=141748\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=speed of the current<BR>\n" );
document.write( "    30-x = speed of the boat upstream<BR>\n" );
document.write( "    30+x = speed of the boat downstream<BR>\n" );
document.write( "    t = time it takes to go downstream\r<BR>\n" );
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document.write( "If it takes 1 and 1/2 times longer to go upstream over the same distance, and distance=speed * time\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2830-x%29%2A1.5t=%2830%2Bx%29%2At ALIGN=MIDDLE  ALT=\"%2830-x%29%2A1.5t=%2830%2Bx%29%2At\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=45t-1.5xt=30t%2Bxt ALIGN=MIDDLE  ALT=\"45t-1.5xt=30t%2Bxt\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15t=2.5xt ALIGN=MIDDLE  ALT=\"15t=2.5xt\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Dividing both sides by 2.5t to solve for x, we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6=x ALIGN=MIDDLE  ALT=\"6=x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The speed of the current is 6mph<BR>\n" );
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