document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=893140>Question 893140</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a train travels 5 km/h faster than its normal speed, it would take 1 hour less to<BR>\n" );
document.write( "travel 210 km. What is the normal speed?\r<BR>\n" );
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document.write( "Based on Quadratics </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #541111 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=541111\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a train travels 5 km/h faster than its normal speed, it would take 1 hour less to<BR>\n" );
document.write( "travel 210 km. What is the normal speed? <BR>\n" );
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document.write( "let x=normal speed<BR>\n" );
document.write( "x+5=faster speed<BR>\n" );
document.write( "Travel time=distance/speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=210%2Fx-210%2F%28x%2B5%29=1 ALIGN=MIDDLE  ALT=\"210%2Fx-210%2F%28x%2B5%29=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "lcd:x(x+5)<BR>\n" );
document.write( "210x+1050-210x=x(x+5)=x^2+5x<BR>\n" );
document.write( "x^2+5x-1050=0<BR>\n" );
document.write( "(x+35)(x-30)=0<BR>\n" );
document.write( "x=-35(reject)<BR>\n" );
document.write( "or<BR>\n" );
document.write( "x=30<BR>\n" );
document.write( "What is the normal speed? 30 km/hr </SPAN>\n" );
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