document.write( "Question 1025836: Lisa has 45 coins that are worth a total of $3.50. If the coins are all nickels and dimes, how many more dimes than nickels does she have? \n" ); document.write( "

Algebra.Com's Answer #641135 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+n+\"$ = number of nickels she has
\n" ); document.write( "Let $\"+d+\"$ = number of dimes she has
\n" ); document.write( "(1) $\"+n+%2B+d+=+45+\"$
\n" ); document.write( "(2) $\"+5n+%2B+10d+=+350+\"$ ( in cents )
\n" ); document.write( "-------------------------------
\n" ); document.write( "(2) $\"+n+%2B+2d+=+70+\"$
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) $\"+n+%2B+2d+=+70+\"$
\n" ); document.write( "(1) $\"+-n+-+d+=+-45+\"$
\n" ); document.write( "--------------------
\n" ); document.write( " $\"+d+=+25+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+n+%2B+d+=+45+\"$
\n" ); document.write( "(1) $\"+n+%2B+25+=+45+\"$
\n" ); document.write( "(1) $\"+n+=+20+\"$
\n" ); document.write( "-------------------
\n" ); document.write( " $\"+d+-+n+=+25+-+20+\"$
\n" ); document.write( " $\"+d+-+n+=+5+\"$
\n" ); document.write( "She has 5 more dimes than nickels \n" ); document.write( "

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