document.write( "Question 123561: David has 3 more dimes than nickels. He loses 2 dimes then counts his money and finds he has $3.10. How many nickels does David have? I keep getting a fraction with this.
\n" ); document.write( "Thank you for your help. \n" ); document.write( "

Algebra.Com's Answer #90635 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"n\"$ = number of nickels
\n" ); document.write( " $\"d\"$ = number of dimes
\n" ); document.write( " $\"d+=+n+%2B+3\"$
\n" ); document.write( " $\"10d+-+20+%2B+5n+=+310\"$
\n" ); document.write( "Substitute $\"d\"$ in the 1st for $\"d\"$ in the 2nd
\n" ); document.write( " $\"10%28n+%2B+3%29+-+20+%2B+5n+=+310\"$
\n" ); document.write( " $\"10n+%2B+30+-+20+%2B+5n+=+310\"$
\n" ); document.write( " $\"15n+%2B+10+=+310\"$
\n" ); document.write( " $\"15n+=+300\"$
\n" ); document.write( " $\"n+=+20\"$
\n" ); document.write( "He has 20 nickels
\n" ); document.write( "check answer
\n" ); document.write( " $\"d+=+n+%2B+3\"$
\n" ); document.write( " $\"d+=+20+%2B+3\"$
\n" ); document.write( " $\"d+=+23\"$
\n" ); document.write( " $\"10d+-+20+%2B+5n+=+310\"$
\n" ); document.write( " $\"10%2A23+-+20+%2B+5%2A20+=+310\"$
\n" ); document.write( " $\"230+-+20+%2B+100+=+310\"$
\n" ); document.write( " $\"310+=+310\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );