document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1154800>Question 1154800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Train A has a speed 15 miles per hour greater than that of train B. If train A travels 270miles in the same times train B travels <BR>\n" );
document.write( "240 miles, what are the speeds of the two trains?\r<BR>\n" );
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document.write( "Train A was traveling at ( )  miles an hour where train B was traveling at ( ) miles per hour??? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #777280 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=777280\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rate * time = distance<BR>\n" );
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document.write( "Let the rate of train B be r, then rate of train A is r+15<BR>\n" );
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document.write( "(1)  (r+15) * t = 270<BR>\n" );
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document.write( "(2)  r * t = 240<BR>\n" );
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document.write( "There are two equations in two unknowns<BR>\n" );
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document.write( "solve equation 2 for t<BR>\n" );
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document.write( "t = 240/r<BR>\n" );
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document.write( "substitute for t in equation 1<BR>\n" );
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document.write( "(r+15) * 240/r = 270<BR>\n" );
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document.write( "240r +3600 = 270r<BR>\n" );
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document.write( "30r = 3600<BR>\n" );
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document.write( "r = 120<BR>\n" );
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document.write( "Train B travels at 120 miles per hour<BR>\n" );
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document.write( "Train A travels at 120 +15 = 135 miles per hour<BR>\n" );
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document.write( "Train A was traveling at 135 miles an hour where train B was traveling at 120 miles per hour<BR>\n" );
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