document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=5891>Question 5891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A motorboat can travel at a rate of 15 mph in still water. It went downstream on a river in 4 hours. It took 6 hours to return the same distance. What is the rate of the current. How far did the boat go?\r<BR>\n" );
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document.write( "My answer was: Rate of current -30<BR>\n" );
document.write( "The boat went 150 miles<BR>\n" );
document.write( "     Is this right? Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #3074 by </B><A HREF=/tutors/aboutme.mpl?userid=Abbey><B>Abbey(339)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Abbey><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=3074\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x = the current<BR>\n" );
document.write( "rate with the current = 15+x<BR>\n" );
document.write( "rate against the current = 15-x<BR>\n" );
document.write( "distance both ways is equal<BR>\n" );
document.write( "rate * time = distance<BR>\n" );
document.write( "distance going=(15+x)4<BR>\n" );
document.write( "distance coming = (15-x)6<BR>\n" );
document.write( "set these equations equal to one another because distance both ways is equal:<BR>\n" );
document.write( "(15+x)4=(15-x)6<BR>\n" );
document.write( "60+4x=90-6x<BR>\n" );
document.write( "subtract 60 from both sides<BR>\n" );
document.write( "4x=30-6x<BR>\n" );
document.write( "add 6x to both sides<BR>\n" );
document.write( "10x=30<BR>\n" );
document.write( "divide both sides by 10<BR>\n" );
document.write( "x=3\r<BR>\n" );
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document.write( "the current = 3mph<BR>\n" );
document.write( "(15+3)4= distance<BR>\n" );
document.write( "18*4 = distance<BR>\n" );
document.write( "72 miles = distance\r<BR>\n" );
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document.write( "verify:<BR>\n" );
document.write( "(15-3)*6 = distance<BR>\n" );
document.write( "12*6 = distance<BR>\n" );
document.write( "72 miles = distance\r<BR>\n" );
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document.write( "The boat traveled 144 miles total in a 3 mph current </SPAN>\n" );
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