document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920768>Question 920768</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A car travels from P to Q at a constant speed. If its speed were increased by 10 km/h, it would have been taken one hour lesser to cover the distance. It would have taken further 45 minutes lesser if the speed was further increased by 10 km/h. the distance between the two cities is\r<BR>\n" );
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document.write( "please solved this question starting to ending.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558580 by </B><A HREF=/tutors/aboutme.mpl?userid=multiplier><B>multiplier(8)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=multiplier><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=558580\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let v- constant speed of car in km/hr<BR>\n" );
document.write( "    s- distance between the two cities(P to Q) in kilometers<BR>\n" );
document.write( "    t- time to travel from P to Q in hours<BR>\n" );
document.write( "    working formula: s=vt<BR>\n" );
document.write( "    cond. 1: s=vt >(Eq 1)<BR>\n" );
document.write( "    cond. 2: v is increase by 10 km/hr, the value of (v) in (Eq 1) becomes<BR>\n" );
document.write( "                 (v+10), and (t) in will be (t-1)  <BR>\n" );
document.write( "                 s=(v+10)(t-1) > (Eq 2)<BR>\n" );
document.write( "    cond. 3:v is increased further by 10km/hr, time is cut by 45 minutes<BR>\n" );
document.write( "                  s=(v+20)(t-7/4) >(Eq 3)... (7/4= 1 hr and 45 minutes)<BR>\n" );
document.write( "    since distance from P & Q is constant, s will be same in all conditions<BR>\n" );
document.write( "              equate (Eq 1), (Eq 2) and (Eq 3) <BR>\n" );
document.write( "              v=60km/hr; t=7 hours<BR>\n" );
document.write( "              s=420 km-the distance you are looking for...<BR>\n" );
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