document.write( "Question 991535: Ron has 20 coins with a total value of $1.50. The coins are nickels and dimes. How many of each coin does he have? \n" ); document.write( "
Algebra.Com's Answer #611394 by macston(5194)\"\" \"About 
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\n" ); document.write( "N=number of nickels; D=number of dimes
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\n" ); document.write( "N+D=20
\n" ); document.write( "N=20-D
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\n" ); document.write( "$0.05N+$0.10D=$1.50
\n" ); document.write( "$0.05(20-D)+$0.10D=$1.50
\n" ); document.write( "$1.00-$0.05D+$0.10D=$1.50
\n" ); document.write( "$0.05D=$0.50
\n" ); document.write( "D=10
\n" ); document.write( ".
\n" ); document.write( "N=20-D=20-10=10
\n" ); document.write( "ANSWER: He has 10 of each coin.
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\n" ); document.write( "CHECK:
\n" ); document.write( "$0.05N+$0.10D=$1.50
\n" ); document.write( "$0.05(10)+$0.10(10)=$1.50
\n" ); document.write( "$0.50+$1.00=$1.50
\n" ); document.write( "$1.50=$1.50\r
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