document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=589266>Question 589266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a boat trip trip 10 miles down a river takes you 1 hour and 15 minutes but it takes 4 hours to return.... whats the speed of the boat in still water and the speed of the current </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #374776 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=374776\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Use <i>distance</i> equals <i>rate</i> times <i>time</i>, from which you can derive <i>rate</i> equals <i>distance</i> divided by <i>time</i>.\r<BR>\n" );
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document.write( "To go downstream it takes 1.25 (1 hour 15 minutes is 1 and 1 quarter hour) hours to go 10 miles.  10 divided by 1.25 is 8, so the rate of the boat in still water PLUS the rate of the current is 8 miles per hour.\r<BR>\n" );
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document.write( "To go upstream it takes 4 hours to go 10 miles.  10 divided by 4 is 2.5, so the rate of the boat in still water MINUS the rate of the current is 2.5 miles per hour.\r<BR>\n" );
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document.write( "Set up your 2X2 system of equations:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ r\ +\ r_c\ =\ 8\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ r\ -\ r_c\ =\ 2.5\">\r<BR>\n" );
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document.write( "Use the elimination method to solve for <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \left(r,\,r_c\right)\">\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
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