document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=252128>Question 252128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Crystallina spent her entire $ 20 weekly allowance on books and candy last week. This week she did the same, but she spent 50 % more on candy and 12.5 % less on books.How much did she spend on candy this week? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #183901 by </B><A HREF=/tutors/aboutme.mpl?userid=dabanfield><B>dabanfield(803)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dabanfield><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=183901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Crystallina spent her entire $ 20 weekly allowance on books and candy last week. This week she did the same, but she spent 50 % more on candy and 12.5 % less on books.How much did she spend on candy this week?\r<BR>\n" );
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document.write( "Let x be the amount she spent the first week on books and y the amount on candy. \r<BR>\n" );
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document.write( "Then:\r<BR>\n" );
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document.write( "x + y = 20 or<BR>\n" );
document.write( "y = 20 - x\r<BR>\n" );
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document.write( "The second week then we have:\r<BR>\n" );
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document.write( ".875x + 1.5y = 20\r<BR>\n" );
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document.write( "Substituting 20-x for y in the second equation we have:\r<BR>\n" );
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document.write( ".875*x + 1.5*(20 - x) = 20 \r<BR>\n" );
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document.write( "Solve for x and then calculate y = 20 - x.<BR>\n" );
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