document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=771765>Question 771765</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7: Your piggy bank contains $19.75 in dimes and quarters. There are 100 coins in all. How many dimes are there?<BR>\n" );
document.write( " i need help, how will i solve this ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #470439 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=470439\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Dimes = x<BR>\n" );
document.write( "Quarters = y<BR>\n" );
document.write( "x + y = 100.....1<BR>\n" );
document.write( "10x + 25y = 1975....2<BR>\n" );
document.write( "Multiply Eq (1) by 25<BR>\n" );
document.write( "25x + 25y = 2500....3<BR>\n" );
document.write( "10x + 25y = 1975....2<BR>\n" );
document.write( "Subtract (2) from (3)<BR>\n" );
document.write( "15x        = 525<BR>\n" );
document.write( "x         = 35<BR>\n" );
document.write( "Substitute x = 35 into Eq (1)<BR>\n" );
document.write( "x + y = 100<BR>\n" );
document.write( "35 + y = 100<BR>\n" );
document.write( "y = 100 - 35<BR>\n" );
document.write( "y = 65.<BR>\n" );
document.write( "Therefore there are 35 dimes and 65 quarters.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );