document.write( "Question 219874: You have quarters and nickels. You have a total of 15 coins. Altogether you have a total of $1.55. how many coins do you have? \n" ); document.write( "

Algebra.Com's Answer #165239 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"n\"$ = number of nickels
\n" ); document.write( "Let $\"q\"$ = number of quarters
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"n+%2B+q+=+15\"$
\n" ); document.write( "(2) $\"5n+%2B+25q+=+155\"$ (in cents)
\n" ); document.write( "---------------------------------
\n" ); document.write( "From (1)
\n" ); document.write( " $\"q+=+15+-+n\"$
\n" ); document.write( "Subsitute in (2)
\n" ); document.write( "(2) $\"5n+%2B+25q+=+155\"$
\n" ); document.write( " $\"5n+%2B+25%2A%2815+-+n%29+=+155\"$
\n" ); document.write( " $\"5n+%2B+375+-+25n+=+155\"$
\n" ); document.write( " $\"-20n+=+-220\"$
\n" ); document.write( " $\"n+=+11\"$
\n" ); document.write( "And
\n" ); document.write( " $\"q+=+15+-+n\"$
\n" ); document.write( " $\"q+=+15+-+11\"$
\n" ); document.write( " $\"q+=+4\"$
\n" ); document.write( "You have 11 nickels and 4 quarters\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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