document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=781691>Question 781691</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a table there are 20 coins, some quarters and some dimes. There value is $3.05. How many if each coin are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #476052 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=476052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On a table there are 20 coins, some quarters and some dimes. There value is $3.05. How many if each coin are there?<BR>\n" );
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document.write( "Quantity Equation: d + q = 20 coins<BR>\n" );
document.write( "Value Equation:: 10d+25q = 305 cents<BR>\n" );
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document.write( "Modify for elimination::<BR>\n" );
document.write( "2d + 2q = 40<BR>\n" );
document.write( "2d + 5q = 61<BR>\n" );
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document.write( "Subtract and solve for \"q\":<BR>\n" );
document.write( "3q = 21<BR>\n" );
document.write( "q = 7 (# of quarters)<BR>\n" );
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document.write( "d = 20-7 = 13 (# of dimes)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
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