document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994638>Question 994638</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A paddle boat can move at a speed of 20km/h in still water. The boat is paddles 10km downstream in a river in the same time it takes to go 5km upstream. What is the speed of the river? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613672 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613672\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "r=rate of river<BR>\n" );
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document.write( "Upstream:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bupstream%5D=distance%2Frate ALIGN=MIDDLE  ALT=\"time%5Bupstream%5D=distance%2Frate\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bupstream%5D=%285km%29%2F%2820kph-r%29 ALIGN=MIDDLE  ALT=\"time%5Bupstream%5D=%285km%29%2F%2820kph-r%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "Downstream:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bdownstream%5D=distance%2Frate ALIGN=MIDDLE  ALT=\"time%5Bdownstream%5D=distance%2Frate\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bdownstream%5D=10km%2F%2820kph%2Br%29 ALIGN=MIDDLE  ALT=\"time%5Bdownstream%5D=10km%2F%2820kph%2Br%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bupstream%5D=time%5Bdownstream%5D ALIGN=MIDDLE  ALT=\"time%5Bupstream%5D=time%5Bdownstream%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >:<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5km%2F%2820kph-r%29=10km%2F%2820kph%2Br%29 ALIGN=MIDDLE  ALT=\"5km%2F%2820kph-r%29=10km%2F%2820kph%2Br%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%285km%29%2820kph%2Br%29=%2810km%29%2820kph-r%29 ALIGN=MIDDLE  ALT=\"%285km%29%2820kph%2Br%29=%2810km%29%2820kph-r%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28100km%5E2%29_per_hr%2B5r_km=%28200km%5E2%29_per_hr-10r_km ALIGN=MIDDLE  ALT=\"%28100km%5E2%29_per_hr%2B5r_km=%28200km%5E2%29_per_hr-10r_km\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15r_km=%28100km%5E2%29_per_hr ALIGN=MIDDLE  ALT=\"15r_km=%28100km%5E2%29_per_hr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "r=6.667 km/hr<BR>\n" );
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document.write( "ANSWER: The speed of the current was 6.667 kilometers per hour.<BR>\n" );
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document.write( "CHECK:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=time%5Bupstream%5D=time%5Bdownstream%5D ALIGN=MIDDLE  ALT=\"time%5Bupstream%5D=time%5Bdownstream%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5km%2F%2820kph-6.667kph%29=10km%2F%2820kph%2B6.667kph%29 ALIGN=MIDDLE  ALT=\"5km%2F%2820kph-6.667kph%29=10km%2F%2820kph%2B6.667kph%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5km%2F13.333kph=10km%2F20.667kph ALIGN=MIDDLE  ALT=\"5km%2F13.333kph=10km%2F20.667kph\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.375hr=0.375hr ALIGN=MIDDLE  ALT=\"0.375hr=0.375hr\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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