document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=380439>Question 380439</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I hope someone can help me. I do not understand word problems and I need it worked out. Please help me.\r<BR>\n" );
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document.write( "Avoiding a collision. A car is traveling on a road that<BR>\n" );
document.write( "is perpendicular to a railroad track. When the car is<BR>\n" );
document.write( "30 meters from the crossing, the car’s new collision<BR>\n" );
document.write( "detector warns the driver that there is a train 50 meters<BR>\n" );
document.write( "from the car and heading toward the same crossing. How<BR>\n" );
document.write( "far is the train from the crossing?\r<BR>\n" );
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document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269999 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=269999\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A car is traveling on a road that<BR>\n" );
document.write( "is perpendicular to a railroad track. When the car is<BR>\n" );
document.write( "30 meters from the crossing, the car’s new collision<BR>\n" );
document.write( "detector warns the driver that there is a train 50 meters<BR>\n" );
document.write( "from the car and heading toward the same crossing. How<BR>\n" );
document.write( "far is the train from the crossing?\r<BR>\n" );
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document.write( "...<BR>\n" );
document.write( "The car, the train & the crossing are at right angle at any given time.<BR>\n" );
document.write( "So it is a right triangle situation<BR>\n" );
document.write( "..<BR>\n" );
document.write( "distance between car & train = 50 meters<BR>\n" );
document.write( "distance between car & crossing = 30 meters<BR>\n" );
document.write( "..<BR>\n" );
document.write( "apply pythagoras theorem<BR>\n" );
document.write( "train to crossing be x m<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x^2+30^2=50^2<BR>\n" );
document.write( "x^2+900=2500<BR>\n" );
document.write( "x^2=2500-900<BR>\n" );
document.write( "x^2=1600<BR>\n" );
document.write( "x= +/- 40<BR>\n" );
document.write( "...<BR>\n" );
document.write( "so x = 40 meters, distance of car from crossing.\r<BR>\n" );
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document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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