document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=27194>Question 27194</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A moterboat can go 8 miles downstream in 20 mins. It takes 30 mins for this boat to go back upstream the same 8 miles. Find the speed of the current.                                                                                                                                                       I know how to set everything up except for the rate. PLEASE HELP!!!!  \r<BR>\n" );
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document.write( "                                                 Thank You,<BR>\n" );
document.write( "                                                 Stacy </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #14784 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=14784\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20 minutes = 1/3 hours.<BR>\n" );
document.write( "30 minutes = 1/2 hours.<BR>\n" );
document.write( "Let the speed of the boat be y.<BR>\n" );
document.write( "Let the speed of the current be x.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F%28x-y%29%2F3=8%2F%28x%2By%29%2F2 ALIGN=MIDDLE  ALT=\"8%2F%28x-y%29%2F3=8%2F%28x%2By%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2By%29%2F2=8 ALIGN=MIDDLE  ALT=\"%28x%2By%29%2F2=8\"   DISABLED_style= \"max-width:90%; height:auto;\" > ---> solve for y<BR>\n" );
document.write( "x-y=16<BR>\n" );
document.write( "y=16+x (subsitution)\r<BR>\n" );
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document.write( "(x+y)/2=8<BR>\n" );
document.write( "x+y=24 (subsitue for y)<BR>\n" );
document.write( "x+(16+x)=24<BR>\n" );
document.write( "x+16+x=24<BR>\n" );
document.write( "2x=8<BR>\n" );
document.write( "x=4\r<BR>\n" );
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document.write( "y=16+4<BR>\n" );
document.write( "y=20\r<BR>\n" );
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document.write( "Hence, the speed of the boat is 20mph and the speed of the current is 4mph.\r<BR>\n" );
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