document.write( "Question 874213: For a Saturday matinee, adult tickets cost $8.50 and kids under 12 pay only $6.00. If 80 tickets are sold for a total of $555, how many of the tickets were adult tickets and how many were sold to kids under 12? \n" ); document.write( "
Algebra.Com's Answer #527418 by mananth(16949)\"\" \"About 
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1.00 x + 1.00 y = 80.00 .............1
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\n" ); document.write( "8.50 x + 6.00 y = 555.00 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -6.00
\n" ); document.write( "Multiply (2) by 1.00
\n" ); document.write( "-6.00 x -6.00 y = -480.00
\n" ); document.write( "8.50 x + 6.00 y = 555.00
\n" ); document.write( "Add the two equations
\n" ); document.write( "2.50 x = 75.00
\n" ); document.write( "/ 2.50
\n" ); document.write( "x = 30.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1.00 x + 1.00 y = 80.00
\n" ); document.write( "30.00 + y = 80.00
\n" ); document.write( " y = 80.00 -30.00
\n" ); document.write( " y = 50.00
\n" ); document.write( " y = 50.00
\n" ); document.write( "x= 30 number of adult tickets
\n" ); document.write( "y= 50 number of child tickets
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