document.write( "Question 420261: A movie theater sells children's tickets for $7.00 and adult tickets for $9.00. The theater sold 120 tickets and earned $1,000.00. How many of each ticket did the theater sell?\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #293709 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Children's Tickets x
\n" ); document.write( "Adult tickets ------------ y
\n" ); document.write( "x + y = 120 .............1
\n" ); document.write( "7 x + 9 y =1000 .............2
\n" ); document.write( "
\n" ); document.write( "multiply (1)by -9
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-9 x + -9 y = -1080
\n" ); document.write( "7x + 9 y = 1000
\n" ); document.write( "Add the two equations
\n" ); document.write( "
\n" ); document.write( "-2 x = -80
\n" ); document.write( "
\n" ); document.write( "/-2
\n" ); document.write( "
\n" ); document.write( "x=40 Children's Tickets
\n" ); document.write( "
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "
\n" ); document.write( "x + y = 120
\n" ); document.write( "40+y = 120
\n" ); document.write( "y = 120-40
\n" ); document.write( "y = 80
\n" ); document.write( "y = 80 Adult tickets
\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "
\n" );