document.write( "Question 86838: solve and check thank you
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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? \n" );
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Algebra.Com's Answer #62829 by ptaylor(2198)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor \n" ); document.write( " |