document.write( "Question 1009803: Ron has 15 coins with a total value of $2.15. The coins are nickels and quarters. How many of each coin does he have? \n" ); document.write( "

Algebra.Com's Answer #625292 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+n+\"$ = number of nickels
\n" ); document.write( "Let $\"+q+\"$ = number of quarters
\n" ); document.write( "---------------------------
\n" ); document.write( "(1) $\"+n+%2B+q+=+15+\"$
\n" ); document.write( "(2) $\"+5n+%2B+25q+=+215+\"$ ( in cents )
\n" ); document.write( "-------------------------------
\n" ); document.write( "(2) $\"+n+%2B+5q+=+43+\"$
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) $\"+n+%2B+5q+=+43+\"$
\n" ); document.write( "(1) $\"+-n+-+q+=+-15+\"$
\n" ); document.write( "-------------------
\n" ); document.write( " $\"+4q+=+28+\"$
\n" ); document.write( " $\"+q+=+7+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+n+%2B+q+=+15+\"$
\n" ); document.write( "(1) $\"+n+%2B7+=+15+\"$
\n" ); document.write( "(1) $\"+n+=+8+\"$
\n" ); document.write( "8 nickels and 7 quarters
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+5%2A8+%2B+25%2A7+=+215+\"$
\n" ); document.write( "(2) $\"+40+%2B+175+=+215+\"$
\n" ); document.write( "(2) $\"+215+=+215+\"$
\n" ); document.write( "OK \n" ); document.write( "

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