document.write( "Question 1052381: FJoan has only dimes and quarters in her purse. If she has 18 coins worth $3.30, then how many of each coin does she have in her purse? \n" ); document.write( "

Algebra.Com's Answer #667760 by Fombitz(32388) $\"\"$ $\"About$

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$\"D%2BQ=18\"$
\n" ); document.write( "and
\n" ); document.write( " $\"10D%2B25Q=330\"$
\n" ); document.write( " $\"2D%2B5Q=66\"$
\n" ); document.write( "From above,
\n" ); document.write( " $\"2D%2B2Q=36\"$
\n" ); document.write( "Subtracting,
\n" ); document.write( " $\"2D%2B5Q-2D-2Q=66-36\"$
\n" ); document.write( " $\"3Q=30\"$
\n" ); document.write( " $\"Q=10\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"D%2B10=18\"$
\n" ); document.write( " $\"D=8\"$
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