document.write( "Question 575898: Rory has 30 coins (all nickels and dimes). He has five times as many nickels as dimes. How much money does he have? \n" ); document.write( "

Algebra.Com's Answer #369652 by josmiceli(19441) $\"\"$ $\"About$

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$\"+d+\"$ = number of dimes
\n" ); document.write( " $\"+n+\"$ = number of nickels
\n" ); document.write( "given:
\n" ); document.write( " $\"+d+%2B+n+=+30+\"$
\n" ); document.write( " $\"+n+=+5d+\"$
\n" ); document.write( "---------
\n" ); document.write( "By substitution:
\n" ); document.write( " $\"+d+%2B+5d+=+30+\"$
\n" ); document.write( " $\"+6d+=+30+\"$
\n" ); document.write( " $\"+d+=+5+\"$
\n" ); document.write( "and, since
\n" ); document.write( " $\"+d+%2B+n+=+30+\"$
\n" ); document.write( " $\"+5+%2B+n+=+30+\"$
\n" ); document.write( " $\"+n+=+25+\"$
\n" ); document.write( "He has 25 nickels and 5 dimes
\n" ); document.write( " $\"+25%2A5+%2B+5%2A10+=+175+\"$ cents
\n" ); document.write( " $\"+175%2F100+=+1.75+\"$ dollars
\n" ); document.write( "He has $1.75 \n" ); document.write( "

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