document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=411874>Question 411874</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A blue car is traveling on the freeway at 55 miles per hou. When first observed, a red car is one half mile behind the blue car. From that point in time, it takes exactly 70 seconds for the red car to overtake and pass the blue car. How fast was the red car traveling? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #289429 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=289429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let speed of red car be x mph<BR>\n" );
document.write( "speed of blue car = x+55 mph<BR>\n" );
document.write( "catch up distance = 1/2 mile = <BR>\n" );
document.write( "catch up time = 70 seconds = 70/3600 hours= 7/360 hours\r<BR>\n" );
document.write( "\n" );
document.write( "s= d/t<BR>\n" );
document.write( "s= (3/2 ) / (7/360)<BR>\n" );
document.write( "s=3/2 * 360/7<BR>\n" );
document.write( "s=540/7<BR>\n" );
document.write( "x+55 = 540/7<BR>\n" );
document.write( "7x+385=540<BR>\n" );
document.write( "7x=540-385<BR>\n" );
document.write( "7x=155<BR>\n" );
document.write( "/7<BR>\n" );
document.write( "x=22.14<BR>\n" );
document.write( "Speed of red car = 55+22.14 = 77.14 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );