document.write( "Question 1017023: A man has $0.70 in dimes and nickels. He has 8 coins altogether. How many nickels does he have?
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Algebra.Com's Answer #633351 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "N=nickels; D=dimes \n" ); document.write( ". \n" ); document.write( "N+D=8 \n" ); document.write( "N=8-D \n" ); document.write( ". \n" ); document.write( "$0.05N+$0.10D=$0.70 \n" ); document.write( "$0.05(8-D)+$0.10D=$0.70 \n" ); document.write( "$0.40-$0.05D+$0.10D=$0.70 \n" ); document.write( "$0.05D=$0.30 \n" ); document.write( "D=6 . There are 6 dimes. \n" ); document.write( ". \n" ); document.write( "N=8-D=8-6=2 \n" ); document.write( ". \n" ); document.write( "ANSWER: There are 2 nickels. \n" ); document.write( ". \n" ); document.write( "CHECK: \n" ); document.write( "$0.05N+$0.10D=$0.70 \n" ); document.write( "$0.05(2)+$0.10(6)=$0.70 \n" ); document.write( "$0.10+$0.60=$0.70 \n" ); document.write( "$0.70=$0.70 \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |