document.write( "Question 125405: Martha has 56 coins, they are all dimes and quarters, they total $8.00,
\n" ); document.write( "how many dimes and quarters make up the $8.00, solve using linear equation \n" ); document.write( "

Algebra.Com's Answer #91895 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"d\"$ = number of dimes
\n" ); document.write( "Let $\"q\"$ = number of quarters
\n" ); document.write( " $\"d+%2B+q+=+56\"$
\n" ); document.write( " $\"10d+%2B+25q+=+800\"$
\n" ); document.write( " $\"d+=+56+-+q\"$
\n" ); document.write( " $\"10%2856+-+q%29+%2B+25q+=+800\"$
\n" ); document.write( " $\"560+-+10q+%2B+25q+=+800\"$
\n" ); document.write( " $\"15q+=+800+-+560\"$
\n" ); document.write( " $\"15q+=+240\"$
\n" ); document.write( " $\"q+=+16\"$
\n" ); document.write( " $\"d+=+56+-+q\"$
\n" ); document.write( " $\"d+=+56+-+16\"$
\n" ); document.write( " $\"d+=+40\"$
\n" ); document.write( "There are 16 quarters and 40 dimes
\n" ); document.write( "check answer
\n" ); document.write( " $\"10d+%2B+25q+=+800\"$
\n" ); document.write( " $\"10%2A40+%2B+25%2A16+=+800\"$
\n" ); document.write( " $\"400+%2B+400%2B+800\"$
\n" ); document.write( " $\"800+=+800\"$
\n" ); document.write( "OK \n" ); document.write( "

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