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document.write( "sarah has a total of $4.10 in dimes and quarters. Altogether there are 29 coins. how many dimes and quarters does she have? \n" );
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Algebra.Com's Answer #435366 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! Q+D=29 \n" ); document.write( "Q=29-D \n" ); document.write( ".25Q+.10D=4.10 \n" ); document.write( ".25(29-D)+.10D=4.10 \n" ); document.write( "7.25-.25D+10D=4.10 \n" ); document.write( "-.15D=4.10-7.25 \n" ); document.write( "-.15D=-3.15 \n" ); document.write( "D=-3.15/-.15 \n" ); document.write( "D=21 NUMBER OF DIMES. \n" ); document.write( "Q=29-21=8 QUARTERS. \n" ); document.write( "PROOF: \n" ); document.write( ".25*8+.10*21=4.10 \n" ); document.write( "2.00+2.10=4.10 \n" ); document.write( "4.10=4.10 \n" ); document.write( " |