document.write( "Question 81081: Anna has 12 bills in her wallet, some 5$ and some $10. The total value of the bills is $100. How many of each bill does Anna have? \n" ); document.write( "
Algebra.Com's Answer #58163 by stanbon(75887)\"\" \"About 
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Anna has 12 bills in her wallet, some 5$ and some $10. The total value of the bills is $100. How many of each bill does Anna have?
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\n" ); document.write( "Let # of $5 bills be x ; Value of these is 5x dollars
\n" ); document.write( "# of $10 bills is \"12-x\" ; Value of these is 10(12-x)= 120-10x dollars
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\n" ); document.write( "EQUATION:
\n" ); document.write( "value + value = 100 dollars
\n" ); document.write( "5x+120-10x = 100
\n" ); document.write( "-5x = -20
\n" ); document.write( "x=4 ( # of $5 bills)
\n" ); document.write( "12-x=8 (# of $10 bills)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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