document.write( "Question 425901: A total of 200 people attend a concert. Floor tickets cost $15 and balcony tickets cost $12. If ticket sales resulted in $2,556, how many floor tickets were sold? \n" ); document.write( "

Algebra.Com's Answer #296397 by mananth(16946) $\"\"$ $\"About$

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Number of floor tickets x
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\n" ); document.write( "\n" ); document.write( "x+y=200 .............1
\n" ); document.write( "15x+12y=2556 .............2
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\n" ); document.write( "multiply (1)by -12
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-12x-12y=-2400
\n" ); document.write( "15x+12y=2556
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\n" ); document.write( "Add the two equations
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\n" ); document.write( "3x=156
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\n" ); document.write( "/3
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\n" ); document.write( "x=52 ===> 52.00 floor tickets
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\n" ); document.write( "plug value of x in (1)
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\n" ); document.write( "x+y=200
\n" ); document.write( "52+y=200
\n" ); document.write( "y=200-52
\n" ); document.write( "y=148 balcony tickets \n" ); document.write( "

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