document.write( "Question 86838: solve and check thank you
\n" ); document.write( "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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Algebra.Com's Answer #62829 by ptaylor(2198)\"\" \"About 
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Let x=number of $5 bills in Anna's wallet
\n" ); document.write( "Then 12-x=number of $10 bills in her wallet\r
\n" ); document.write( "\n" ); document.write( "Value of $5 bills=$5x
\n" ); document.write( "Value of $10 bills=$10(12-x)\r
\n" ); document.write( "\n" ); document.write( "Now we are told that the total value of the bills is $100. So----\r
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\n" ); document.write( "\n" ); document.write( "$5x+$10(12-x)=$100 get rid of parens\r
\n" ); document.write( "\n" ); document.write( "$5x+$120-$10x=$100 subtract $120 from both sides\r
\n" ); document.write( "\n" ); document.write( "$5x+$120-$120-$10x=$100-$120 collect like terms\r
\n" ); document.write( "\n" ); document.write( "-$5x=-$20 divide both sides by -$5\r
\n" ); document.write( "\n" ); document.write( "x=4---------------------number of $5 bills\r
\n" ); document.write( "\n" ); document.write( "12-x=12-4=8----------------------------number of $10 bills\r
\n" ); document.write( "\n" ); document.write( "CK\r
\n" ); document.write( "\n" ); document.write( "$5(4)+$10(8)=$100\r
\n" ); document.write( "\n" ); document.write( "$20+$80=$100\r
\n" ); document.write( "\n" ); document.write( "$100=$100\r
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\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor
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