document.write( "Question 319523: A movie theatre charges $7.50 for adults and $4.50 for children. The receipts for one showing of a movie were $540. If 80 tickets were sold, find how many tickets of each type were sold. \n" ); document.write( "
Algebra.Com's Answer #228867 by mananth(16946)\"\" \"About 
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A movie theatre charges $7.50 for adults and $4.50 for children. The receipts for one showing of a movie were $540. If 80 tickets were sold, find how many tickets of each type were sold.\r
\n" ); document.write( "\n" ); document.write( "$7.50 for adults Let number of adults = x
\n" ); document.write( " $4.50 for children. number of children =y
\n" ); document.write( "Receipts = $540
\n" ); document.write( "tickets sold = 80
\n" ); document.write( "..
\n" ); document.write( "1...x+y=80
\n" ); document.write( "2...7.50x+4.50y=540
\n" ); document.write( "Multiply eq 1 by 7.5 and subtract eq2
\n" ); document.write( "7.5x+7.5y-7.5x-4.5y=60
\n" ); document.write( "3y=60
\n" ); document.write( "y=20 the number of children
\n" ); document.write( "number of adults = 60
\n" ); document.write( "
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