document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=547041>Question 547041</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a train travels 100km in the same time that a plane covers 450 km. if the speed of the plane is 30km per hr less than 5 times the speed of the train , find both speeds.. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356210 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=356210\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> train speed =x<BR>\n" );
document.write( "distance =180\r<BR>\n" );
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document.write( "plane speed = 5x-30<BR>\n" );
document.write( "distance = 450\r<BR>\n" );
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document.write( "t=d/r\r<BR>\n" );
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document.write( "100/x = 450/(5x-30)<BR>\n" );
document.write( "time for both is same\r<BR>\n" );
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document.write( "cross multiply\r<BR>\n" );
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document.write( "100(5x-30)=450x<BR>\n" );
document.write( "500x-3000=450x<BR>\n" );
document.write( "500x-450x=3000<BR>\n" );
document.write( "50x=3000<BR>\n" );
document.write( "/50<BR>\n" );
document.write( "x=60 mph speed of car\r<BR>\n" );
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document.write( "speed of plane = 5x-30<BR>\n" );
document.write( "=5*60-30<BR>\n" );
document.write( "=300-30<BR>\n" );
document.write( "=270 mph speed of plane </SPAN>\n" );
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