document.write( "Question 900567: A bag contains dimes and nickels. There are 18 coins in the bag. The value of the coins is $1.25. How many nickels are in the bag? \n" ); document.write( "
Algebra.Com's Answer #546263 by richwmiller(17219)\"\" \"About 
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x+y=18,
\n" ); document.write( "5*x+10*y=125
\n" ); document.write( "x=18-y
\n" ); document.write( "5*(18-y)+10*y=125
\n" ); document.write( "90-5y+10*y=125
\n" ); document.write( "5*y=35
\n" ); document.write( "y=7
\n" ); document.write( "x=18-y
\n" ); document.write( "x=11 at 5 and y=7 at 10
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\n" ); document.write( "11+7=18
\n" ); document.write( "5*x+10*y=125
\n" ); document.write( "5*11+10*7=125
\n" ); document.write( "55+70=125
\n" ); document.write( "125=125
\n" ); document.write( "ok
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