document.write( "Question 127644: Eric has 130 coins consisting of nickels and quaters. The coins combined value come to $15.90. Can you please help me find out how manyof each coin eric has. \n" ); document.write( "

Algebra.Com's Answer #93535 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"n\"$ = number of nickels
\n" ); document.write( " $\"q\"$ = number of quarters
\n" ); document.write( " $\"n+%2B+q+=+130\"$
\n" ); document.write( " $\"n+=+130+-+q\"$
\n" ); document.write( " $\"5n+%2B+25q+=+1590\"$
\n" ); document.write( "Notice that everything in this equation is expressed in pennies
\n" ); document.write( " $\"5%28130+-+q%29+%2B+25q+=+1590\"$
\n" ); document.write( " $\"650+-+5q+%2B+25q+=+1590\"$
\n" ); document.write( " $\"20q+=+1590+-+650\"$
\n" ); document.write( " $\"20q+=+940\"$
\n" ); document.write( " $\"q+=+47\"$
\n" ); document.write( " $\"n+=+130+-+q\"$
\n" ); document.write( " $\"n+=+130+-+47\"$
\n" ); document.write( " $\"n+=+83\"$
\n" ); document.write( "Eric has 83 nickels and 47 quarters
\n" ); document.write( "check:
\n" ); document.write( " $\"5n+%2B+25q+=+1590\"$
\n" ); document.write( " $\"5%2A83+%2B+25%2A47+=+1590\"$
\n" ); document.write( " $\"415+%2B+1175+=+1590\"$
\n" ); document.write( " $\"1590+=+1590\"$
\n" ); document.write( "OK \n" ); document.write( "

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