document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=293812>Question 293812</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Average age of students of an adult school is 40 years. 120 new students whose average age is 32 years joined the school. As a result the average age is decreased by 4 years. Find the number of students of the school after joining of the new students:\r<BR>\n" );
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document.write( "(a) 1200 (b) 120 (c) 360 (d) 240 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #212000 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=212000\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let the number of students be x. The sum of all their ages = 40x\r<BR>\n" );
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document.write( "120 joined \r<BR>\n" );
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document.write( "total is x+120\r<BR>\n" );
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document.write( "The sum of all their ages = 40x+ 120*32\r<BR>\n" );
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document.write( "=40x + 3840\r<BR>\n" );
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document.write( "average age now is 36\r<BR>\n" );
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document.write( "40x+3840  / x+120 =36\r<BR>\n" );
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document.write( "40x+3820 = 36(x+120)\r<BR>\n" );
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document.write( "40x+3840 =36x + 4320\r<BR>\n" );
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document.write( "40x-36x= 4320-3840\r<BR>\n" );
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document.write( "4x= 480\r<BR>\n" );
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document.write( "x= 120\r<BR>\n" );
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document.write( "initially there were 120. 120 joined. so total isd 240 students </SPAN>\n" );
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