document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=62750>Question 62750</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321279093/algebrahomeworkh>College Algebra </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> HELP!!!!!  Word Problem\r<BR>\n" );
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document.write( "A mail-order lacrosse equipment business shipped 120 packages one day.  Customers are charged $3.50 for each standard-delivery package and $7.50 for each express-delivery package.  Total shipping charges for the day were $596.  How many of each kind of package were shipped?  \r<BR>\n" );
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document.write( "Using substitution method of solving systems of equations. Making x=number of standard-delivery packages and y=number of express-delivery packages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #43582 by </B><A HREF=/tutors/aboutme.mpl?userid=uma><B>uma(370)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=uma><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=43582\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the number of standard delivery packages be = x\r<BR>\n" );
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document.write( "let the number of express delivery package = y\r<BR>\n" );
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document.write( "Then x + y = 120 \r<BR>\n" );
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document.write( "==> y = 120 - x ---------(1) [adding -x to either side]\r<BR>\n" );
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document.write( "Cost of x standard delivery package = $3.50x\r<BR>\n" );
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document.write( "Cost of y express delivery package = $7.50y\r<BR>\n" );
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document.write( "==> 3.5x +  7.5y = 596  ---------(2)<BR>\n" );
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document.write( "Plugging in the value of y in the above we get..\r<BR>\n" );
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document.write( "3.5x + (7.5)(120 - x) = 596\r<BR>\n" );
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document.write( "==> 3.5x + 900 - 7.5x = 596\r<BR>\n" );
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document.write( "==> - 4x + 900 = 596<BR>\n" );
document.write( "==> -4x + 900 - 900 = 596 - 900 [adding - 900 to both the sides]\r<BR>\n" );
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document.write( "==> - 4x = - 304\r<BR>\n" );
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document.write( "==> - 4x/-4 = - 304/-4\r<BR>\n" );
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document.write( "==> x = 76\r<BR>\n" );
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document.write( "So y = 120 - x<BR>\n" );
document.write( "     = 120 - 76\r<BR>\n" );
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document.write( "    = 44\r<BR>\n" );
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document.write( "Number of standard delivery packages = 76\r<BR>\n" );
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document.write( "Number of express delivery packages = 44\r<BR>\n" );
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document.write( "Good Luck!!! \r<BR>\n" );
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document.write( " </SPAN>\n" );
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