document.write( "Question 63262This question is from textbook
\n" );
document.write( ": Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have? \n" );
document.write( "
Algebra.Com's Answer #44023 by uma(370)![]() ![]() ![]() You can put this solution on YOUR website! Let Jill have x nickels and y dimes. \n" ); document.write( "Then x + y = 50 ------------------------(1)\r \n" ); document.write( "\n" ); document.write( "value of x nickels = 5x\r \n" ); document.write( "\n" ); document.write( "value of y dimes = 10y\r \n" ); document.write( "\n" ); document.write( "==> 5x + 10y = 350 \n" ); document.write( "Dividing throughout by 5 we have,\r \n" ); document.write( "\n" ); document.write( "==> x + 2y = 70 -----------------------(2)\r \n" ); document.write( "\n" ); document.write( "Subtracting eqns (2) and (1) we get,\r \n" ); document.write( "\n" ); document.write( "y = 20 \n" ); document.write( "Plugging in y = 20 in (1) we arrive that x = 30\r \n" ); document.write( "\n" ); document.write( "Thus Jill had 30 nickels and 20 dimes.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Good Luck!!! \n" ); document.write( " |