document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=814637>Question 814637</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in a hostel it costs Rs.1800 to keep 50 children for 8 weeks. for what length of time did the cost of  keeping 90 children amount to Rs.21060. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #490414 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=490414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The key here is to first determine the cost of 1 child for 1 week.<BR>\n" );
document.write( "Set x= cost of one child<BR>\n" );
document.write( "    w= number of weeks<BR>\n" );
document.write( "     w*x = 1800<BR>\n" );
document.write( "     8(50)x = 1800<BR>\n" );
document.write( "      400x = 1800<BR>\n" );
document.write( "     Divide each side by 400<BR>\n" );
document.write( "       x = 1800/400 = 4.5<BR>\n" );
document.write( "So 1 child per week = 4.5\r<BR>\n" );
document.write( "\n" );
document.write( "To solve for number of weeks Rs.21060 pays for,<BR>\n" );
document.write( "Set y = number of weeks<BR>\n" );
document.write( "    y*4.5 = 21060<BR>\n" );
document.write( "    Divide each side by 4.5<BR>\n" );
document.write( "    y = 21060/4.5 = 4680<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );