document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=990740>Question 990740</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Distance–Rate–Time. A long-distance delivery service sends out a truck with a package at 7 A.M. At 7:30 A.M., the manager realizes there was another package going to the same location. He sends out a car to catch the truck. If the truck travels at an average speed of 20 miles per hour and the car travels at 80 miles per hour, how long will it take the car to catch the truck?\r<BR>\n" );
document.write( "\n" );
document.write( "Round your answer to the nearest minute. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #610739 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=610739\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The truck travels for more time and travels slower than the car.  Car and truck meet when they each go the same distance from departure.  Half hour difference between 7AM and 7:30AM.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "VEHICLE     SPEED     TIME     DISTANCE\r\n" );
document.write( "Truck       20        t+1/2     d\r\n" );
document.write( "Car         80         t        d\r\n" );
document.write( "</PRE>\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "RT=D relates rate, time, distance; for uniform travel rates.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%2820%28t%2B1%2F2%29=d%2C80t=d%29 ALIGN=MIDDLE  ALT=\"system%2820%28t%2B1%2F2%29=d%2C80t=d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%2820%28t%2B1%2F2%29=80t%29 ALIGN=MIDDLE  ALT=\"highlight%2820%28t%2B1%2F2%29=80t%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for t. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );