document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=766601>Question 766601</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 6 hours Renu walks 6 km more than Kopila walks in 3 hours and in 8 hours Kopila walks 12 km more than renu walks in 9 hours .Find their speed in km per hour. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #467108 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=467108\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In 6 hours Renu walks 6 km more than Kopila walks in 3 hours and in 8 hours Kopila walks 12 km more than renu walks in 9 hours .Find their speed in km per hour.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x=Renu's walking speed<BR>\n" );
document.write( "let y=Kopila's walking speed<BR>\n" );
document.write( "distance=travel time*speed<BR>\n" );
document.write( "..<BR>\n" );
document.write( "6x-3y=6<BR>\n" );
document.write( "8y-9x=12<BR>\n" );
document.write( "..<BR>\n" );
document.write( "6x-3y=6<BR>\n" );
document.write( "-9x+8y=12<BR>\n" );
document.write( "..<BR>\n" );
document.write( "48x-24y=48<BR>\n" );
document.write( "-27x+24y=36<BR>\n" );
document.write( "add<BR>\n" );
document.write( "21x=84<BR>\n" );
document.write( "x=3<BR>\n" );
document.write( "3y=6x-6=18-6=12<BR>\n" );
document.write( "Renu's walking speed=3 km/hr<BR>\n" );
document.write( "Kopila's walking speed=12 km/hr </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );