document.write( "Question 1072511: A jar holding 36 coins, only nickels and quarters, is worth $6.20. There are eight more quarters than there are nickels. How many nickels are in the jar \n" ); document.write( "
Algebra.Com's Answer #805421 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! n = number of nickels \n" ); document.write( "q = number of quarters\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "n + q = 36 \n" ); document.write( "5n + 25q = 620\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply the first equation by 25. We are going to eliminate the variable q.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "25n + 25q = 900 \n" ); document.write( "5n + 25q = 620\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract: 20n = 280, so n = 14.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 14 nickels in the jar. \n" ); document.write( " |