document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188521>Question 188521</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618594027/algebrahomeworkh>McDougal Littell Algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Laura has $4.50 in dimes and quarters.  She has 3 more dimes than quarters.  How many quarters does she have.\r<BR>\n" );
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document.write( "How do you find two linear equations (y=mx+b), one that shows quantity of the coins.  And one that shows the amount the coins are worth.  I am suppose to use \"d\" and \"q\" to represent the dimes and quarters.  \r<BR>\n" );
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document.write( "So far I got: q=dx+3 and 4.50=qx+d<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 #141344 by </B><A HREF=/tutors/aboutme.mpl?userid=feliz1965><B>feliz1965(151)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=feliz1965><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=141344\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Laura has $4.50 in dimes and quarters.  She has 3 more dimes than quarters.  How many quarters does she have?\r<BR>\n" );
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document.write( "Let x = number of coins\r<BR>\n" );
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document.write( "The value of a dime = 0.10\r<BR>\n" );
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document.write( "The value of a quarter = 0.25\r<BR>\n" );
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document.write( "I will use whole numbers in place of decimals for easy reading.\r<BR>\n" );
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document.write( "10(x + 3) + 25x = 450\r<BR>\n" );
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document.write( "25x = quarters\r<BR>\n" );
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document.write( "10(x + 3) = dimes\r<BR>\n" );
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document.write( "10x + 30 + 25x = 450\r<BR>\n" );
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document.write( "35x = 450 - 30\r<BR>\n" );
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document.write( "35x = 420\r<BR>\n" );
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document.write( "x = 420/35\r<BR>\n" );
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document.write( "x = 12\r<BR>\n" );
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document.write( "There are 12 quarters.\r<BR>\n" );
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document.write( "How many dimes?\r<BR>\n" );
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document.write( "dimes = 10(12 + 3)\r<BR>\n" );
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document.write( "dimes = 10(15)\r<BR>\n" );
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document.write( "dimes = 150\r<BR>\n" );
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