document.write( "Question 957211: a purse contains 100 coins that are nicks and dimes. The total value is $7. How many nickels and dimes are there? \n" ); document.write( "
Algebra.Com's Answer #584875 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! N+D=100 OR N=100-D \n" ); document.write( ".05N+.10D=7.00 \n" ); document.write( ".05(100-D)+.10D=7.00 \n" ); document.write( "5-.05D+.10D=7.00 \n" ); document.write( ".05D=7-5 \n" ); document.write( ".05D=2 \n" ); document.write( "D=2/.05 \n" ); document.write( "D=40 NO. OF DIMES. \n" ); document.write( "N+40=100 \n" ); document.write( "N=100-40 \n" ); document.write( "N=60 NO. OF NICKELS. \n" ); document.write( "PROOF: \n" ); document.write( ".05*60+.10*40*=7.00 \n" ); document.write( "3.00+4.00=7.00 \n" ); document.write( "7.00=7.00 \n" ); document.write( " |