document.write( "Question 1002488: i have a collection of 25 pennies and dimes. their total value is $1.24. how many of each coin are there \n" ); document.write( "
Algebra.Com's Answer #805384 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! p = number of pennies \n" ); document.write( "d = number of dimes\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "p + d = 25 \n" ); document.write( "p + 10d = 124\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply the first equation by 10. We are eliminating the variable d.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10p + 10d = 250 \n" ); document.write( "p + 10d = 124\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtracting, we get 9p = 126, or p = 14.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 14 pennies and 11 dimes. \n" ); document.write( " |