document.write( "Question 129532: Joe had twice as many nickels as dimes. Altogether he had $4.20. How many nickels and how many dimes does Joe have? \n" ); document.write( "

Algebra.Com's Answer #94584 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"d\"$ = number of dimes
\n" ); document.write( "Let $\"n\"$ = number of nickels
\n" ); document.write( " $\"n+=+2d\"$
\n" ); document.write( " $\"5n+%2B+10d+=+420\"$
\n" ); document.write( " $\"5%2A%282d%29+%2B+10d+=+420\"$
\n" ); document.write( " $\"20d+=+420\"$
\n" ); document.write( " $\"d+=+21\"$
\n" ); document.write( " $\"n+=+2d\"$
\n" ); document.write( " $\"n+=+42\"$
\n" ); document.write( "Joe has 42 nickels and 21 dimes
\n" ); document.write( "check answer:
\n" ); document.write( " $\"5n+%2B+10d+=+420\"$
\n" ); document.write( " $\"5%2A42+%2B+10%2A21+=+420\"$
\n" ); document.write( " $\"210+%2B+210+=+420\"$
\n" ); document.write( " $\"420+=+420\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );