document.write( "Question 125067: Calvin paid his $1.35 skate rental with dimes and nickels only. There were 19 coins in all. How many of each coin were there? \n" ); document.write( "
Algebra.Com's Answer #91702 by checkley71(8403)\"\" \"About 
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N+D=19 N=19-D
\n" ); document.write( ".10D+.05(19-D)=1.35
\n" ); document.write( ".10D+.95-.05D=1.35
\n" ); document.write( ".05D=1.35-.95
\n" ); document.write( ".05D=.40
\n" ); document.write( "D=.40/.05
\n" ); document.write( "D=8 DIMES.
\n" ); document.write( "19-8=11 NICKELS.
\n" ); document.write( "PROOF
\n" ); document.write( ".10*8+.05*11=1.35
\n" ); document.write( ".80+.55=1.35
\n" ); document.write( "1.35=1.35\r
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