document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=982767>Question 982767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the ski club is planning to charter a bus to a ski resort. the cost will be $900 and each member will share the cost equally. if the club had 15 more members, the  cost  per persona would be  $10 less. how many are in  the club now?( hint if x=number in the club now, 900/x= cost per person.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #603559 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=603559\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the ski club is planning to charter a bus to a ski resort. the cost will be $900 and each member will share the cost equally. if the club had 15 more members, the cost per persona would be $10 less. how many are in the club now?( hint if x=number in the club now, 900/x= cost per person.)<BR>\n" );
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document.write( "Starting average cost per person:: 900/x<BR>\n" );
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document.write( "After gaining 15 members:: 900/(x+15)<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "original average - new average = 10<BR>\n" );
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document.write( "900/x - 900/(x+15) = 10<BR>\n" );
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document.write( "1/x - 1/(x+15) = 1/90<BR>\n" );
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document.write( "90(x+15) - 90x = x^2 + 15x<BR>\n" );
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document.write( "x^2 + 15x - 90*15 = 0<BR>\n" );
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document.write( "Positive solution::<BR>\n" );
document.write( "x = 30 (original number of students)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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