document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1099709>Question 1099709</A>: <I><SPAN STYLE=\"word-break: break-all;\">  If a grandfather clock takes 30 seconds to strike six, how long does it take to strike 12?   THINK! This one is not as easy as it may seem.<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 #714261 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52782)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=714261\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( " If a grandfather clock takes 30 seconds to strike six, how long does it take to strike 12?   THINK! This one is not as easy as it may seem.<BR>\n" );
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document.write( "A beatiful Wikipedia article  https://en.wikipedia.org/wiki/Striking_clock  says:\r<BR>\n" );
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document.write( "    A striking clock (also known as chiming clock) is a clock that sounds the hours audibly on a bell or gong. \r\n" );
document.write( "    In 12-hour striking, used most commonly in striking clocks today, the clock strikes once at one a.m., twice at two a.m., \r\n" );
document.write( "    continuing in this way up to twelve times at 12 noon, then starts again, striking once at one p.m., \r\n" );
document.write( "    twice at two p.m., up to twelve times at 12 midnight.\r\n" );
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document.write( "Armed with this knowledge, &nbsp;let me re-solve this problem by another way.\r<BR>\n" );
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document.write( "The striking clock, &nbsp;when striking &nbsp;six, &nbsp;has &nbsp;5 &nbsp;(five) &nbsp;time intervals between the strikes. \r<BR>\n" );
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document.write( "It means that each such time interval is &nbsp;&nbsp;<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2F5 ALIGN=MIDDLE  ALT=\"30%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 6 seconds.\r<BR>\n" );
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document.write( "12 strikes have &nbsp;11  time intervals between the very first and very last strikes.\r<BR>\n" );
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document.write( "Hence, &nbsp;it will take  (6 seconds * 11 intervals) = 66 seconds from the first strike to the last one.\r<BR>\n" );
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document.write( "Dear TUTORS !  &nbsp;&nbsp;It is well known &nbsp;(and one can say even &nbsp;<U>FAMOUS</U> !) &nbsp;<U>entertainment problem for children of the &nbsp;1 - 2 - 3 grade</U> (!!!), \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and each generation re-opens it again and again.\r<BR>\n" );
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document.write( "This problem  counts as many years as striking clocks do exist: &nbsp;<U>hundreds years</U>.\r<BR>\n" );
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document.write( "And &nbsp;&nbsp;(or &nbsp;BUT) &nbsp;&nbsp;&nbsp;the &nbsp;&nbsp;solution &nbsp;&nbsp;remains &nbsp;&nbsp;the &nbsp;&nbsp;same &nbsp;. &nbsp;. &nbsp;. (as it is written everywhere).\r<BR>\n" );
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