document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=914830>Question 914830</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Aeroplane left 30 minutes later than its scheduled time and in order to reach distination 1500 KM  away in time,it has to increase its speed by 250 km/h from its usual speed.determine it usual speed </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #555313 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39623)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=555313\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r, the usual speed\r<BR>\n" );
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document.write( "______________speed_______time_______distance<BR>\n" );
document.write( "REGULAR________r__________(___)_______1500<BR>\n" );
document.write( "LATE__________r+250_______t-1/2_______1500\r<BR>\n" );
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document.write( "The uniform rates rule for travel will allow an expression for the missing time for the regular trip.  \r<BR>\n" );
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document.write( "______________speed_______time_______distance<BR>\n" );
document.write( "REGULAR________r__________(1500/r)_______1500<BR>\n" );
document.write( "LATE__________r+250_______t-1/2_______1500\r<BR>\n" );
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document.write( "This means that the tabulated number information can be also shown as:\r<BR>\n" );
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document.write( "______________speed_______time_______distance<BR>\n" );
document.write( "REGULAR________r__________(1500/r)_______1500<BR>\n" );
document.write( "LATE__________r+250_______1500/r-1/2_______1500\r<BR>\n" );
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document.write( "Again using the basic rule for traveling uniform rates, we can form an equation for the LATE trip.  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28%28r%2B250%29%281500%2Fr-1%2F2%29=1500%29 ALIGN=MIDDLE  ALT=\"highlight_green%28%28r%2B250%29%281500%2Fr-1%2F2%29=1500%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >; which is an equation in just the single variable, r, which is also what the question asks to find.  Solve the equation for r.\r<BR>\n" );
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