document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=239103>Question 239103</A>: <I><SPAN STYLE=\"word-break: break-all;\"> train a and b are on parallel tracks. Train a is going 100 miles per hour and reaches station A at 4:15am. Train b is going 110 miles per hour and reaches station A at 4:45am. At what point will train b catch train a? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #175620 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=175620\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT<BR>\n" );
document.write( "D=100T<BR>\n" );
document.write( "D=110(T-.5)<BR>\n" );
document.write( "100T=110(T-.5<BR>\n" );
document.write( "100T=110T-55<BR>\n" );
document.write( "100T-110T=-55<BR>\n" );
document.write( "-10T=-55<BR>\n" );
document.write( "T=-55/-10<BR>\n" );
document.write( "T=5.5 HOURS AFTER 4:15 TRAIN B WILL CATCH TRAIN A.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "100*5.5=110(5.5-.5)<BR>\n" );
document.write( "550=110*5<BR>\n" );
document.write( "550=550<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );