document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=919777>Question 919777</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mathematics teacher bought a $45 calculator for class use. Each student donated the same amount of money. If there had been 5 more students in te class, each would have had to pay 30 cents less. How many students were in the class? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #557964 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=557964\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 45/n -45/(n+5) = .30<BR>\n" );
document.write( "45(n+5) - 45n = .3n(n+5)<BR>\n" );
document.write( ".3n^2 + 1.5n - 225 = 0<BR>\n" );
document.write( "n^2 + 5n - 750 = 0  (Tossing out the negative solution for unit measure)<BR>\n" );
document.write( "(n + 30)(n - 25) = 0<BR>\n" );
document.write( "n = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+highlight_green%2825%29 ALIGN=MIDDLE  ALT=\"+highlight_green%2825%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  students were in the class<BR>\n" );
document.write( "And...checking<BR>\n" );
document.write( "45/25 = $1.80<BR>\n" );
document.write( "45/30 = $1.50 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );