document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=83625>Question 83625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a cruise boat travels 84 miles downstream in 2 hours and returns upstream in 6 hours find the rate of the stream  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #61449 by </B><A HREF=/tutors/aboutme.mpl?userid=JohnsenP><B>JohnsenP(4)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JohnsenP><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=61449\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Formula is D = r x t\r<BR>\n" );
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document.write( "Down stream = r + c<BR>\n" );
document.write( "Upstream    = r - c\r<BR>\n" );
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document.write( "Distance = 84 mile w/c is the same in both Up and Downstream\r<BR>\n" );
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document.write( "Time = Up 6 hrs\r<BR>\n" );
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document.write( "Time = Down 2 hrs\r<BR>\n" );
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document.write( "The equation is;\r<BR>\n" );
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document.write( "84 = (r + c)* 2 Downstream\r<BR>\n" );
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document.write( "84 = (r - c)* 6 Upstream<BR>\n" );
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document.write( "   (84 = 2r + 2c)*-3     ( since you want to solve for the current, eliminate r<BR>\n" );
document.write( "    84 = 6r - 6c           by multiplying -3)\r<BR>\n" );
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document.write( "   -252 = -6r - 6c<BR>\n" );
document.write( "     84 =  6r - 6c\r<BR>\n" );
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document.write( " It yields -168 = -12 c     devide both by -12 to get the value of c\r<BR>\n" );
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document.write( "            c = 14 mph      that's the speed of the stream\r<BR>\n" );
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document.write( "  \r<BR>\n" );
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document.write( "Hope this will help you.  Johnsen P\r<BR>\n" );
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