document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=853724>Question 853724</A>: <I><SPAN STYLE=\"word-break: break-all;\"> two cars leave an intersection at the same time. one travels north. the second car travels south and is driving three times as fast as the first car. after one hour they are 100 miles apart. what are their speed<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514202 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=514202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The cars are travelling in opposite direction.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "let speed of one car be x<BR>\n" );
document.write( "other is 3x\r<BR>\n" );
document.write( "\n" );
document.write( "The effective speed is 4x\r<BR>\n" );
document.write( "\n" );
document.write( "time = 1 hour<BR>\n" );
document.write( "distance = 100\r<BR>\n" );
document.write( "\n" );
document.write( "speed = distance / time\r<BR>\n" );
document.write( "\n" );
document.write( "4x= 100/1\r<BR>\n" );
document.write( "\n" );
document.write( "4x=100<BR>\n" );
document.write( "x=25\r<BR>\n" );
document.write( "\n" );
document.write( "one car speed = 25 mph<BR>\n" );
document.write( "other car speed = 3x = 75 mph\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );