document.write( "Question 1110285: Prom tickets beforehand were $31 and at the door they were $40 a total of 200 tickets were sold. Total money collected for both was 6,641.00
\n" ); document.write( "- How many tickets were sold at the door?
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Algebra.Com's Answer #725283 by mananth(16946)\"\" \"About 
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Prom tickets beforehand were $31 and at the door they were $40 a total of 200 tickets were sold. Total money collected for both was 6,641.00
\n" ); document.write( "- How many tickets were sold at the door?\r
\n" ); document.write( "\n" ); document.write( "Let beforehand tickets sold be x
\n" ); document.write( "door tickets sold be y
\n" ); document.write( "x+y = 200................1\r
\n" ); document.write( "\n" ); document.write( "Value equation
\n" ); document.write( "31x+40y = 6641...........2\r
\n" ); document.write( "\n" ); document.write( "Multiply (1) by 31
\n" ); document.write( "31x+31y=6200
\n" ); document.write( "31x+40y = 6641\r
\n" ); document.write( "\n" ); document.write( "subtract
\n" ); document.write( "-9y = -441
\n" ); document.write( "y =49\r
\n" ); document.write( "\n" ); document.write( "you can calculate x by plugging y
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