document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=495481>Question 495481</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this question? This question is for h.w that's due tomorrow and I really need help. Please do not just answer the question but show how you got to the answer and all the work involved in it. Thanks so much! \r<BR>\n" );
document.write( "\n" );
document.write( "Problem: Suppose you own a card shop. You buy one line of cards at a rate of 4 cards for $5. You plan to sell the cards at a rate of 3 cards for $5. How many cards must you sell in order to make a profit of $100? \r<BR>\n" );
document.write( "\n" );
document.write( "Please solve with all the work as soon as possible! Thanks so much! :)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #336093 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=336093\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the number of cards you need to sell be x.<BR>\n" );
document.write( "Recall that Profit (P) = Selling price (S) - Cost (C).<BR>\n" );
document.write( "P = S-C <BR>\n" );
document.write( "The profit is to be P = $100.00<BR>\n" );
document.write( "The selling price <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S+=+%28x%29%285%2F3%29 ALIGN=MIDDLE  ALT=\"S+=+%28x%29%285%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >  That is x times $5.00 per 3 cards.<BR>\n" );
document.write( "The cost <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C+=+%28x%29%285%2F4%29 ALIGN=MIDDLE  ALT=\"C+=+%28x%29%285%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > That is x times $5.00 per 4 cards.<BR>\n" );
document.write( "So the equation would be:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100+=+%285%2F3%29x+-+%285%2F4%29x ALIGN=MIDDLE  ALT=\"100+=+%285%2F3%29x+-+%285%2F4%29x\"   DISABLED_style= \"max-width:90%; height:auto;\" > Solve for x.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100+=+%2820x-15x%29%2F12 ALIGN=MIDDLE  ALT=\"100+=+%2820x-15x%29%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply both sides by 12.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1200+=+5x ALIGN=MIDDLE  ALT=\"1200+=+5x\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide by 5.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=240+=+x ALIGN=MIDDLE  ALT=\"240+=+x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You would have to sell 240 cards to make a profit of $100.00<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "Selling price of 240 cards at 3 cards for $5.00 is: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28240%2F3%29%285%29+=+80%285%29 ALIGN=MIDDLE  ALT=\"%28240%2F3%29%285%29+=+80%285%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=400.00 ALIGN=MIDDLE  ALT=\"400.00\"   DISABLED_style= \"max-width:90%; height:auto;\" > and...<BR>\n" );
document.write( "The cost of 240 cards at $5.00 for 4 cards is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28240%2F4%29%285%29+=+60%285%29 ALIGN=MIDDLE  ALT=\"%28240%2F4%29%285%29+=+60%285%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=300.00 ALIGN=MIDDLE  ALT=\"300.00\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P+=+S-C ALIGN=MIDDLE  ALT=\"P+=+S-C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P+=+400-300 ALIGN=MIDDLE  ALT=\"P+=+400-300\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P+=+100 ALIGN=MIDDLE  ALT=\"P+=+100\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );