document.write( "Question 316821: A box contains seven more nickels than quarters. How many nickels are there if the total value is $2.75? \n" ); document.write( "

Algebra.Com's Answer #226758 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"N=Q%2B7\"$
\n" ); document.write( "2. $\"5N%2B25Q=275\"$
\n" ); document.write( "Substitute eq. 1 into eq. 2,
\n" ); document.write( " $\"5%28Q%2B7%29%2B25Q=275\"$
\n" ); document.write( " $\"5Q%2B35%2B25Q=275\"$
\n" ); document.write( " $\"30Q%2B35=275\"$
\n" ); document.write( " $\"30Q=240\"$
\n" ); document.write( " $\"highlight%28+Q=8%29\"$
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( " $\"N=8%2B7\"$
\n" ); document.write( " $\"highlight%28N=15%29\"$
\n" ); document.write( "There are 15 nickels.
\n" ); document.write( " \n" ); document.write( "

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