document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248643>Question 248643</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The current in a stream moves at a speed of 3mph. A boat travels 45mi upstream and 45 mi downstream in a total time of 8 hours. What is the speed of the boat in still water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181194 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=181194\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT OT T=D/R<BR>\n" );
document.write( "8=45*2/R<BR>\n" );
document.write( "8=45/(R+3)+45/(R-3)<BR>\n" );
document.write( "8=(45R-135+45R+135)/(R+3)(R-3)<BR>\n" );
document.write( "8=(90R)/(R^2-9)<BR>\n" );
document.write( "8(R^2-9)=90R<BR>\n" );
document.write( "8R^2-72-90R=0<BR>\n" );
document.write( "8R^2-90R-72=0<BR>\n" );
document.write( "(2R-24)(4+3)=0<BR>\n" );
document.write( "2R-24=0<BR>\n" );
document.write( "2R=24<BR>\n" );
document.write( "R=12 MPH. IS THE SPEED OF THE BOAT.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "8=45/(12+3)+45/(12-3)<BR>\n" );
document.write( "8=45/15+45/9<BR>\n" );
document.write( "8=3+5<BR>\n" );
document.write( "8=8\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );