document.write( "Question 1014513: John collects coins. He has 51 coins, consisting of dimes and nickles, that are worth $3.35. How many of each type of coin does he have? \n" ); document.write( "
Algebra.Com's Answer #630825 by macston(5194)\"\" \"About 
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\n" ); document.write( "N=nickels; D=dimes
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\n" ); document.write( "N+D=51
\n" ); document.write( "D=51-N . Use this to substitute for D below.
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\n" ); document.write( "$0.05N+$0.10D=$3.35 . Substitute for D from above.
\n" ); document.write( "$0.05N+$0.10(51-N)=$3.35
\n" ); document.write( "$0.05N+$5.10-$0.10N=$3.35
\n" ); document.write( "-$0.05N=-$1.75
\n" ); document.write( "N=35
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\n" ); document.write( "ANSWER 1: He has 35 nickels.
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\n" ); document.write( "D=51-N=51-36=16
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\n" ); document.write( "ANSWER 2: He has 16 nickels.
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\n" ); document.write( "CHECK:
\n" ); document.write( "$0.05N+$0.10D=$3.35
\n" ); document.write( "$0.05(35)+$0.10(16)=$3.35
\n" ); document.write( "$1.75+$1.60=$3.35
\n" ); document.write( "$3.35=$3.35
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