document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=139000>Question 139000</A>: <I><SPAN STYLE=\"word-break: break-all;\"> every 15 min. the fast train arrives & waits 4 min. Then 4 min. after the fast train leaves, the local train arrives & waits 3 min. If you arrive at the station at a random time during the rush period, find the probability that the fast train will be waiting and find the probability that no train will be there.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #101415 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=101415\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> every 15 min. the fast train arrives & waits 4 min. Then 4 min. after the fast train leaves, the local train arrives & waits 3 min. If you arrive at the station at a random time during the rush period, find the probability that the fast train will be waiting and find the probability that no train will be there.\r<BR>\n" );
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document.write( "Draw the picture of a typical 15 minute period.<BR>\n" );
document.write( "fast train: there 4 min; not there 11 min<BR>\n" );
document.write( "local train: not there 4; there 3 min ; not there 8 min<BR>\n" );
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document.write( "P(fast waiting) = 4/15<BR>\n" );
document.write( "P(no train there) = 8/15<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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