document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163167>Question 1163167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> four adults and four children need to cross a river in a rowing boat. Can you determine how to get everyone across, and how many crossings are needed, given the following information?<BR>\n" );
document.write( "1.All adults weigh the same<BR>\n" );
document.write( "2.Each child weighs half as much as an adult<BR>\n" );
document.write( "3.The boat can only carry the weight of one adult<BR>\n" );
document.write( "4.The boat must have someone in it to row it!<BR>\n" );
document.write( "(a)	What if there were 8 adults and 4 children?<BR>\n" );
document.write( "(b)	What if there were 200 adults and 4 children?<BR>\n" );
document.write( "(c)	What if there were n adults and 4 children?\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 #787198 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52797)</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=787198\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "The cycle to transfer one adult across the river is this:\r<BR>\n" );
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document.write( "    a)  Two boys, A and B, cross first in the boat.\r\n" );
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document.write( "    b)  Then boy B returns back alone, leaving boy A on the other bank of the river.\r\n" );
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document.write( "    c)  Then 1-st adult cross the river alone in the boat.\r\n" );
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document.write( "    d)  Then boy A returns back alone.\r\n" );
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document.write( "After these crossings, one adult is transferred to the opposite bank.\r<BR>\n" );
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document.write( "Repeat this cycle as many times until all 4 adults are transferred to the opposite bank of the river.\r<BR>\n" );
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document.write( "After that, transferring boys is a simple problem, which you can analyse by similar manner on your own, without my help.\r<BR>\n" );
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