document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=242456>Question 242456</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many watches purchased at 3 for $20 and sold at 4 for $30 are required to<BR>\n" );
document.write( "make a profit of $40?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #177475 by </B><A HREF=/tutors/aboutme.mpl?userid=JimboP1977><B>JimboP1977(311)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JimboP1977><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=JimboP1977><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=177475\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Well profit = selling price - cost price<BR>\n" );
document.write( "     <BR>\n" );
document.write( "Cost price per watch = $20/3  = $6.66<BR>\n" );
document.write( "     selling price per watch = $30/4 = $7.5\r<BR>\n" );
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document.write( "Difference is 5/6 per watch (30/4) - (20/3)\r<BR>\n" );
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document.write( "So to make a profit of $40 we would need to sell $40/(5/6) = watch number\r<BR>\n" );
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document.write( "= 48 watches. </SPAN>\n" );
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