document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=776038>Question 776038</A>: <I><SPAN STYLE=\"word-break: break-all;\"> at 10:30 am twp planes leave houston one flying east at 560 km/h and the other flying west at 640 km/h at what time will they be 2100 km apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #473339 by </B><A HREF=/tutors/aboutme.mpl?userid=psbhowmick><B>psbhowmick(878)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=psbhowmick><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=psbhowmick><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=473339\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the required time be T hours.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "In T hours the distance travelled by the plane flying East is 560T km.<BR>\n" );
document.write( "In T hours the distance travelled by the plane flying West is 640T km.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Distance between the two planes at time T is (560 + 640)T = 1200T km.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "By problem, 1200T = 2100\r<BR>\n" );
document.write( "\n" );
document.write( "So, T = 2100/1200 = 7/4 = 1.75 hours. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );