document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1031449>Question 1031449</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an amount of R17,70 is made up of 124 coins, which are 20c coins , and 10c coins . how many 20c coins 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 #646126 by </B><A HREF=/tutors/aboutme.mpl?userid=LinnW><B>LinnW(1048)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=LinnW><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=LinnW><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=646126\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let L = number of 20c coins<BR>\n" );
document.write( "Let S = number of 10c coins<BR>\n" );
document.write( "20*L + 10*S = 1770<BR>\n" );
document.write( "L + S = 124 coins<BR>\n" );
document.write( "Solve for S by adding -L to each side<BR>\n" );
document.write( "S = 124 - L<BR>\n" );
document.write( "substitute (124 - L) for S in 20*L + 10*S = 1770<BR>\n" );
document.write( "20*L + 10*(124 - L) = 1770<BR>\n" );
document.write( "20L + 1240 -10L = 1770<BR>\n" );
document.write( "10L + 1240 = 1770<BR>\n" );
document.write( "add -1240 to each side<BR>\n" );
document.write( "10L = 530<BR>\n" );
document.write( "divide each side by 10<BR>\n" );
document.write( "L = 53<BR>\n" );
document.write( "Since S = 124 - L , S = 124 - 53 <BR>\n" );
document.write( "S = 71<BR>\n" );
document.write( "71 * 10c = 710c<BR>\n" );
document.write( "53 * 20c = 1060c<BR>\n" );
document.write( "The total is 1770c<BR>\n" );
document.write( "So we have 53 20c coins and 71 10c coins. </SPAN>\n" );
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