document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1059797>Question 1059797</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sasha has 15 coins worth $2.40. If the coins are all quarters and dimes, how many quarters and dimes does she have?\r<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 #674860 by </B><A HREF=/tutors/aboutme.mpl?userid=math_helper><B>math_helper(2461)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_helper><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/cgi-bin/show-face.mpl?user=math_helper><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=674860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d = # dimes<BR>\n" );
document.write( "q = # quarters\r<BR>\n" );
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document.write( "d+q = 15               (1) (given)<BR>\n" );
document.write( "10d + 25q = 240   (2) (given, expressed in cents)<BR>\n" );
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document.write( "10d + 10q = 150    (eqn(1) x10, call it (1'))<BR>\n" );
document.write( "                15q = 90     (subtracted (1') from (2))<BR>\n" );
document.write( "               q = 6       (divided both sides by 15)\r<BR>\n" );
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document.write( "Plug in q=6 into (1)  ((2) also would work but not as simple of an equation):  d=15-6=9\r<BR>\n" );
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document.write( "Answer:  9 dimes, 6 quarters<BR>\n" );
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document.write( "Check:   9+6=15  (ok on # of coins)<BR>\n" );
document.write( "             10*9 + 25*6 = 90+150 = 240  (ok on value)\r<BR>\n" );
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