document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=37520>Question 37520</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you help me find the linear equation and solution to this problem?\r<BR>\n" );
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document.write( "A river has a current of 2mph. Find the speed of Leroy's boat in still water if it goes 30 miles downstream in the same time it takes to go 18 miles upstream.\r<BR>\n" );
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document.write( "Thanks<BR>\n" );
document.write( "Alan </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23136 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=23136\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The times for going upstream is the same as downstream<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%28u%29+=+t%28d%29 ALIGN=MIDDLE  ALT=\"t%28u%29+=+t%28d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Time equals distance divided by rate<BR>\n" );
document.write( "rate of the river = 2 mph<BR>\n" );
document.write( "rate of boat going downstream = 2 + b<BR>\n" );
document.write( "rate of boat going upstream = 2 - b<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%28u%29+=+18+%2F+%282+-+b%29 ALIGN=MIDDLE  ALT=\"t%28u%29+=+18+%2F+%282+-+b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%28d%29+=+30+%2F+%282+%2B+b%29 ALIGN=MIDDLE  ALT=\"t%28d%29+=+30+%2F+%282+%2B+b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+%2F+%282+-+b%29+=+30+%2F+%282+%2B+b%29 ALIGN=MIDDLE  ALT=\"18+%2F+%282+-+b%29+=+30+%2F+%282+%2B+b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2A%282+%2B+b%29+=+30%2A%282+-+b%29 ALIGN=MIDDLE  ALT=\"18%2A%282+%2B+b%29+=+30%2A%282+-+b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36+%2B+18b+=+60+-+30b ALIGN=MIDDLE  ALT=\"36+%2B+18b+=+60+-+30b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=48b+=+24 ALIGN=MIDDLE  ALT=\"48b+=+24\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+1%2F2 ALIGN=MIDDLE  ALT=\"b+=+1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Speed of boat in still water = 1/2 mph<BR>\n" );
document.write( "check<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+%2F+%282+-+.5%29+=+30+%2F+%282+%2B+.5%29 ALIGN=MIDDLE  ALT=\"18+%2F+%282+-+.5%29+=+30+%2F+%282+%2B+.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18+%2F+1.5+=+30+%2F+2.5 ALIGN=MIDDLE  ALT=\"18+%2F+1.5+=+30+%2F+2.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=180%2F15+=+300%2F25 ALIGN=MIDDLE  ALT=\"180%2F15+=+300%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12+=+12 ALIGN=MIDDLE  ALT=\"12+=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "checks </SPAN>\n" );
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