document.write( "Question 144857: Tamara has 12 coins consisting of quarters and dimes. The total value of the coin is is $ 1.80. How many quarters and dimes does she have in her pocket?
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Algebra.Com's Answer #105563 by checkley77(12844)\"\" \"About 
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Q+D=12 OR Q=12-D
\n" ); document.write( ".25Q+.10D=1.80
\n" ); document.write( ".25(12-D)+.10D=1.80
\n" ); document.write( "3-.25D+.10D=1.80
\n" ); document.write( "-.15D=1.80-3
\n" ); document.write( "-.15D=-1.20
\n" ); document.write( "D=-1.20/-.15
\n" ); document.write( "D=8 IS THE NUMBER OF DIMES.
\n" ); document.write( "Q+8=12
\n" ); document.write( "Q=12-8
\n" ); document.write( "Q=4 IS THE NUMBER OF QUARTERS.
\n" ); document.write( "PROOF
\n" ); document.write( ".25*4+.10*8=1.80
\n" ); document.write( "1+.80=1.80
\n" ); document.write( "1.80=1.80
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