document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=21711>Question 21711</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A motorboat can go 10 miles downstream in 20 minutes.  It takes 30 minutes for this boat to go back upstream the same 10 miles.  Find the speed of the current.\r<BR>\n" );
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document.write( "Not sure if I did this one right, I got 10 mph.  Is this right?\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 #10465 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=10465\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20(x+10)=30(x-10)<BR>\n" );
document.write( "20x+200=30x-300<BR>\n" );
document.write( "20x=30x-500<BR>\n" );
document.write( "-10x=-500<BR>\n" );
document.write( "x=50<BR>\n" );
document.write( "Hence, the speed of the current is 50mph<BR>\n" );
document.write( "Check: 20[(50)+10]=30[(50)-10]<BR>\n" );
document.write( "1200=1200<BR>\n" );
document.write( "L.S.=R.S. </SPAN>\n" );
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