document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=756486>Question 756486</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It took a crew 1 h 12 min to row 1 km upstream and back again. If the rate of flow of the stream was 2 km/h, what was the rowing speed of the crew in still water?\r<BR>\n" );
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document.write( "thanks... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #460251 by </B><A HREF=/tutors/aboutme.mpl?userid=nihar%2A2013><B>nihar*2013(34)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nihar%2A2013><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=nihar%2A2013><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=460251\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I am answering this assuming that while coming back it is downsteam <BR>\n" );
document.write( "Suppose rowing speed is x km/hr <BR>\n" );
document.write( "Flow of stream is 2km / hr\r<BR>\n" );
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document.write( "  1/x-2 + 1/x+2 =72 \r<BR>\n" );
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document.write( "  x+2+x-2=72(x+2) (x-2)   [taking LCM]\r<BR>\n" );
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document.write( " x+x= 72 (x^2-2x+2x-4) \r<BR>\n" );
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document.write( "2x=72 (x^2+4) \r<BR>\n" );
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document.write( "2x= 72x^2-288\r<BR>\n" );
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document.write( "0 = 72x^2-2x-288\r<BR>\n" );
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document.write( "0 = 2 [36x^2-x-144] \r<BR>\n" );
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document.write( "hay it is half of the way accoding to me solution shld be like this do u hv answer for this i think there may be mistake inb question plz recheck the question and tell me if q is perfect tell me answer i will solve further for u thanks\r<BR>\n" );
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document.write( " </SPAN>\n" );
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