document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1011837>Question 1011837</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Marina has a total of 21 coins in dimes and quarters. She has two times as many dimes as quarters <BR>\n" );
document.write( "a) define the variable \r<BR>\n" );
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document.write( "b) state the system of equations that model this situation \r<BR>\n" );
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document.write( "c) determine how many dime and quarters marina has\r<BR>\n" );
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document.write( "d) how much money does marina have <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 #627647 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=627647\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Marina has a total of 21 coins in dimes and quarters. She has two times as many dimes as quarters <BR>\n" );
document.write( "a) define the variables<BR>\n" );
document.write( "d = # of dimes ; q = # of quarters<BR>\n" );
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document.write( "b) state the system of equations that model this situation<BR>\n" );
document.write( "Quantity Eq:: d + q = 21<BR>\n" );
document.write( "Quantity Eq:: d = 2q<BR>\n" );
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document.write( "c) determine how many dime and quarters marina has<BR>\n" );
document.write( "Substitute for \"d\" and solve for \"q\"::<BR>\n" );
document.write( "2q + q = 21<BR>\n" );
document.write( "3q = 21<BR>\n" );
document.write( "q = 7 (# of quarters)<BR>\n" );
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document.write( "Solve for \"d\"::<BR>\n" );
document.write( "d = 21-q = 21-7 = 14 (# of dimes)<BR>\n" );
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document.write( "d) how much money does marina have <BR>\n" );
document.write( "Ans: 7*25 + 14*10 = 175 + 140 = $3.15<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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