document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1205497>Question 1205497</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Danny had 880 cards in his collection. 25% of the cards were football cards and the rest were basketball cards.<BR>\n" );
document.write( "(a) How many more basketball cards than football cards did he have in his collection?<BR>\n" );
document.write( "(b) How many more football cards must Danny buy if he wanted to increase the number of football cards in his collection to 45%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #842349 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=842349\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "(a) 25% of the 880 cards were football cards, so 75% of them were basketball cards.  The difference between 75% and 25% is 50%, so the difference between the number of basketball cards and the number of football cards was 50% of the total number of cards.<br><BR>\n" );
document.write( "ANSWER: 50% of 880, or 440<br><BR>\n" );
document.write( "OR....<br><BR>\n" );
document.write( "25% of 880 is 220, so the number of football cards was 220 and the number of basketball cards was 880-220 = 660; the difference between 660 and 220 is 440.<br><BR>\n" );
document.write( "ANSWER (again...!): 440<br><BR>\n" );
document.write( "(b) Let x be the additional number of football cards.  The number of football cards is now 220+x; the total number of cards is now 880+x.<br><BR>\n" );
document.write( "Danny wants the total number of football cards to be 45% of the total number of cards:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28220%2Bx%29%2F%28880%2Bx%29=0.45 ALIGN=MIDDLE  ALT=\"%28220%2Bx%29%2F%28880%2Bx%29=0.45\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.45%28880%2Bx%29=220%2Bx ALIGN=MIDDLE  ALT=\"0.45%28880%2Bx%29=220%2Bx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=396%2B0.45x=220%2Bx ALIGN=MIDDLE  ALT=\"396%2B0.45x=220%2Bx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=176=0.55x ALIGN=MIDDLE  ALT=\"176=0.55x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=176%2F0.55=320 ALIGN=MIDDLE  ALT=\"x=176%2F0.55=320\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: 320<br><BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "220+320 = 540<BR>\n" );
document.write( "880+320 = 1200<BR>\n" );
document.write( "540/1200 = 0.45<br><BR>\n" );
document.write( " </SPAN>\n" );
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