document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=77309>Question 77309</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321279212/algebrahomeworkh>introductory to algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> At a given hour, two cars leave a city in the same direction.  One travels at 60 mph, and the other travels at 75 mph. In how many hours will the cars be 90 miles apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #55413 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=55413\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At a given hour, two cars leave a city in the same direction.  One travels at 60 mph, and the other travels at 75 mph. In how many hours will the cars be 90 miles apart?<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "1st car:<BR>\n" );
document.write( "rate = 60 mph ; time=x hrs.  ; distance 60x miles<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "2nd car:<BR>\n" );
document.write( "rate = 75 mph ; time = x hrs. ; distance = 75x miles<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "2nd car distance - 1st car distance = 90 miles<BR>\n" );
document.write( "75x - 60x = 90<BR>\n" );
document.write( "15x = 90<BR>\n" );
document.write( "x=6 hrs (time after they will be 90 miles apart)<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );