document.write( "Question 371746: Tom has 27 coins. They are all nickels and dimes. If he has a total of $1.95, how many nickels does he have?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #264811 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Let N be the number of nickels. \n" ); document.write( "Let D be the number of dimes. \n" ); document.write( "Thus N + D = 27 \n" ); document.write( "The value equation is 5N + 10D = 195 \n" ); document.write( "Now multiply the first equation by five and subtract it from the second... \n" ); document.write( "5N + 10D = 195 \n" ); document.write( "-(5N + 5D = 135) \n" ); document.write( "we get \n" ); document.write( "5D = 60 \n" ); document.write( "D = 12 \n" ); document.write( "N = 15 \n" ); document.write( "To check, $1.20 + .75 = $1.95 \n" ); document.write( " |