document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=751511>Question 751511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a lamppost casts a shadow that is 16 feet long a 2.5 foot high mailbox casts a shadow that is 4 feet long how tall is the lamppost ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #457252 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=457252\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a lamppost casts a shadow that is 16 feet long a 2.5 foot high mailbox casts a shadow that is 4 feet long how tall is the lamp post<BR>\n" );
document.write( "both cast shadow same time <BR>\n" );
document.write( "it means angle of elevation at same time will be same and shadow will be also in praposnate <BR>\n" );
document.write( "it will have conditions of two similar triangle <BR>\n" );
document.write( "ratio  of the corresponding side  of similar triangle  are equal<BR>\n" );
document.write( "let height of lamp post is x<BR>\n" );
document.write( "x/16=2.5/4  by cross multiply  we will get <BR>\n" );
document.write( "4x=16 multiplied by 2.5<BR>\n" );
document.write( "x=16 multiplied 2.5/4<BR>\n" );
document.write( "x=10<BR>\n" );
document.write( "height of lamp post is 10 m ANSWER </SPAN>\n" );
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