document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=749525>Question 749525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On Tuesday the express train made the trip in 12 hours. On Wednesday the freight train made the trip in 16 hours. Find the rate of each train if the freight train was 15 miles per hour slower than the express train. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456030 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=456030\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On Tuesday the express train made the trip in 12 hours. On Wednesday the freight train made the trip in 16 hours. Find the rate of each train if the freight train was 15 miles per hour slower than the express train.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let x=distance traveled<BR>\n" );
document.write( "rate=distance/travel time<BR>\n" );
document.write( "x/12=rate of express train<BR>\n" );
document.write( "x/16=rate of freight train<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x/12-x/16=15<BR>\n" );
document.write( "LCD=12*16=192<BR>\n" );
document.write( "16x-12x=2880<BR>\n" );
document.write( "4x=2880<BR>\n" );
document.write( "x=720<BR>\n" );
document.write( "x/12=60<BR>\n" );
document.write( "x/16=45<BR>\n" );
document.write( "rate of express train=60 mph<BR>\n" );
document.write( "rate of freight train=45 mph<BR>\n" );
document.write( ".. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );