document.write( "Question 943212: Sam has 26 coins in nickels and quarters worth $3.10. How many of each coin does he have.
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Algebra.Com's Answer #575034 by macston(5194) You can put this solution on YOUR website! N=nickels, Q=Quarters \n" ); document.write( "N+Q=26; .05(N)+.25(Q)=$3.10 \n" ); document.write( "Q=26-N \n" ); document.write( ".05(N)+.25(26-N)=3.10 \n" ); document.write( ".05N+6.5-.25N=3.10 \n" ); document.write( "-.20N+6.5=3.1 \n" ); document.write( "-.20N=-3.4 \n" ); document.write( "N=17 There are 17 nickels \n" ); document.write( "N+Q=26 \n" ); document.write( "17+Q=26 \n" ); document.write( "Q=9 There are 9 quarters \n" ); document.write( "CHECK \n" ); document.write( ".05(N)+.25(Q)=$3.10 \n" ); document.write( ".05(17)+.25(9)=$3.10 \n" ); document.write( "0.85+2.25=$3.10 \n" ); document.write( "$3.10=$3.10\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |