document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=957182>Question 957182</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cruise ship can sail 25 mph in calm water. Sailing with the Gulf Stream, the ship can sail 256 mi in the same amount of time it takes to sail 144 mi against the Gulf Stream. Find the rate of the Gulf Stream.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #854585 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(53937)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=854585\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A cruise ship can sail 25 mph in calm water. Sailing with the Gulf Stream, the ship can sail 256 mi <BR>\n" );
document.write( "in the same amount of time it takes to sail 144 mi against the Gulf Stream. Find the rate of the Gulf Stream.<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Calculations in the post by @lwsshak3 are incorrect due to arithmetic error.\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;His answer \"25 mph\" for the Gulf Stream rate is absurdist,\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;since then the cruise ship could not sail against the current.\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I came to bring a correct solution.\r<BR>\n" );
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document.write( "let c = rate of gulf stream<BR>\n" );
document.write( "25+c = rate of ship sailing with Gulf Stream<BR>\n" );
document.write( "25-c = rate of ship sailing against Gulf Stream<BR>\n" );
document.write( "travel time=distance/rate (same in both directions)<BR>\n" );
document.write( "...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=256%2F%2825%2Bc%29+=+144%2F%2825-c%29 ALIGN=MIDDLE  ALT=\"256%2F%2825%2Bc%29+=+144%2F%2825-c%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "256(25-c) = 144(25+c)<BR>\n" );
document.write( "6400 - 256c = 3600 + 144c<BR>\n" );
document.write( "400c = 2800<BR>\n" );
document.write( "c = 2800/400 = 7<BR>\n" );
document.write( "rate of gulf stream = 7 mph\r<BR>\n" );
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document.write( "Solved correctly.\r<BR>\n" );
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