document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972938>Question 972938</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Kevin and Randy Muise have a jar containing 72 coins, all of which are either quarters or nickels. The total value of the coins in the jar is $11.40. How many of each type of coin do they have? </SPAN>\n" );
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document.write( "Q=number of quarters; N=number of nickels<BR>\n" );
document.write( "Q+N=72<BR>\n" );
document.write( "Q=72-N Use this to substitute for Q<BR>\n" );
document.write( ".<BR>\n" );
document.write( "$0.25Q+$0.05N=$11.40 Substitute for Q.<BR>\n" );
document.write( "$0.25(72-N)+$0.05N=$11.40<BR>\n" );
document.write( "$18.00-$0.25N+$0.05N=$11.40<BR>\n" );
document.write( "-$0.20N=-$6.60<BR>\n" );
document.write( "N=33 They have 33 nickels<BR>\n" );
document.write( "Q=72-N=72-33=39 They have 39 quarters<BR>\n" );
document.write( ".<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "$0.25Q+$0.05N=$11.40<BR>\n" );
document.write( "$0.25(39)+$0.05(33)=$11.40<BR>\n" );
document.write( "$9.75+$1.65=$11.40<BR>\n" );
document.write( "$11.40=$11.40 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );