document.write( "Question 416688: A convention manager finds that she has $1100 made up of twenties and fifties. She has a total of 37 bills. How many fifty-dollar bills does the manager have? \n" ); document.write( "
Algebra.Com's Answer #291901 by mananth(16946)\"\" \"About 
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$20 bill - x numbers
\n" ); document.write( "$50 bill - y numbers
\n" ); document.write( "x+y = 37 \r
\n" ); document.write( "\n" ); document.write( "20x+50y =1100\r
\n" ); document.write( "\n" ); document.write( "x+y=37 .............1
\n" ); document.write( "20x+50y =1100.............2
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\n" ); document.write( "multiply (1)by -20
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-20x-20y=-740
\n" ); document.write( "20x+50y =1100
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\n" ); document.write( "Add the two equations
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\n" ); document.write( "30y=360
\n" ); document.write( "/30
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\n" ); document.write( "y=12 $30 bills
\n" ); document.write( "Plug value of y in
\n" ); document.write( "x+y= 37
\n" ); document.write( "x+12=37
\n" ); document.write( "x=25 $20 bills
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