document.write( "Question 312758: Jimmy has 15 coins in his pocket. They were dimes and nickels. The total value of the coins is $1.30. How many dimes are in the pocket?\r
\n" ); document.write( "\n" ); document.write( "It tells me to put it into two equations, but I dont know HOW to put it in equation form. \n" ); document.write( "

Algebra.Com's Answer #223620 by Edwin McCravy(20081) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "The first equation is a COIN equation:\r\n" );
document.write( "\r\n" );
document.write( "D + N = 15\r\n" );
document.write( "\r\n" );
document.write( "The second equation is a money equation:\r\n" );
document.write( "\r\n" );
document.write( "$.10D + $.05N = $1.30\r\n" );
document.write( "\r\n" );
document.write( "or thinking of it in pennies,\r\n" );
document.write( "\r\n" );
document.write( "  10D + 5N = 130\r\n" );
document.write( "\r\n" );
document.write( "So you have the systen of equations:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Can you solve that system?  If not post again asking how.\r\n" );
document.write( "\r\n" );
document.write( "Solve that and get D=11, N=4\r\n" );
document.write( "\r\n" );
document.write( "11 dimes is $1.10 and 4 nickes is $.20 a total of $1.30, so it checks.\r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );