document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=243576>Question 243576</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a motorboat took 2 hours to make a downstream trip with a 5mph current. The return trip against the same current took 4 hours. Find 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 #178444 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=178444\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT<BR>\n" );
document.write( "D=(X+5)*2<BR>\n" );
document.write( "D=(X-5)*4<BR>\n" );
document.write( "(X+5)*2=(X-5)*4<BR>\n" );
document.write( "2X+10=4X-20<BR>\n" );
document.write( "2X-4X=-20-10<BR>\n" );
document.write( "-2X=-30<BR>\n" );
document.write( "X=-30/-2<BR>\n" );
document.write( "X=15 MPH IS THE SPEED OF THE BOAT IN STILL WATER.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "(15+5)*2=(15-5)*4<BR>\n" );
document.write( "20*2=10*4<BR>\n" );
document.write( "40=40<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );