document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=517717>Question 517717</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a river with a steady current, it takes the bionic women 6 minutes to swim a certain distance upstream, but it takes her only 3 minutes to swim back. How many minutes would it take a doll of the bionic women to float this same distance downstream. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344881 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=344881\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a river with a steady current, it takes the bionic women 6 minutes to swim a certain distance upstream, but it takes her only 3 minutes to swim back.<BR>\n" );
document.write( " How many minutes would it take a doll of the bionic women to float this same distance downstream.<BR>\n" );
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document.write( "It may be easier to just assume a distance: 240 meters<BR>\n" );
document.write( "then<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F6 ALIGN=MIDDLE  ALT=\"240%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 40 m/min speed upstream<BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F3 ALIGN=MIDDLE  ALT=\"240%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 80 m/min speed downstream<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let s = speed in still water<BR>\n" );
document.write( "Let c = speed of the current, the dolls speed, <BR>\n" );
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document.write( "s - c = 40<BR>\n" );
document.write( "s + c = 80<BR>\n" );
document.write( "-----------adding eliminates c, find s<BR>\n" );
document.write( "2s = 120<BR>\n" );
document.write( "s = 60 m/min in still water<BR>\n" );
document.write( "find c<BR>\n" );
document.write( "60+c = 80<BR>\n" );
document.write( "c = 80 - 60<BR>\n" );
document.write( "c = 20 m/min speed of the current<BR>\n" );
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document.write( "Find the time for doll to drift 240 m at 20 m/min<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240%2F20 ALIGN=MIDDLE  ALT=\"240%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 12 min for the doll to float the same distance.<BR>\n" );
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document.write( " </SPAN>\n" );
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