document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=263127>Question 263127</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The speed of a stream is 4 mph.  A boat travels 7 miles upstream in the same time it takes to travel 15 miles downstream.  What is the speed of the boat in still water?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #193881 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=193881\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT OR T=D/R<BR>\n" );
document.write( "TU=7/(R-C) TRAVEL UPSTREAM<BR>\n" );
document.write( "TD=15/(R+C) TRAVEL DOWN STREAM.<BR>\n" );
document.write( "THE TIMES ARE EQUAL.<BR>\n" );
document.write( "7/(R-4)=15/(R+4)  CROSS MULTIPLY.<BR>\n" );
document.write( "15(R-4)=7(R+4)<BR>\n" );
document.write( "15R-60=7R+28<BR>\n" );
document.write( "15R-7R=28+60<BR>\n" );
document.write( "8R=88<BR>\n" );
document.write( "R=88/8<BR>\n" );
document.write( "R=11 IS THE SPEED OF THE BOAT IN STILL WATER.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "7/(11-4)=15(11+4)<BR>\n" );
document.write( "7/7=15/15<BR>\n" );
document.write( "1=1<BR>\n" );
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