document.write( "Question 730909: a movie theater $7.50 for each adult ticket and $4 for each child ticket. if the theater sold a total of 145 tickets for a total of $790, how many adult tickets were sold \n" ); document.write( "

Algebra.Com's Answer #446941 by mananth(16946) $\"\"$ $\"About$

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x= number of adult tickets
\n" ); document.write( "y= number of child tickets
\n" ); document.write( "
\n" ); document.write( "1.00 x + 1.00 y = 145.00 .............1
\n" ); document.write( "Total value
\n" ); document.write( "7.50 x + 4.00 y = 790.00 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -4.00
\n" ); document.write( "Multiply (2) by 1.00
\n" ); document.write( "-4.00 x -4.00 y = -580.00
\n" ); document.write( "7.50 x + 4.00 y = 790.00
\n" ); document.write( "Add the two equations
\n" ); document.write( "3.50 x = 210.00
\n" ); document.write( "/ 3.50
\n" ); document.write( "x = 60.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1.00 x + 1.00 y = 145.00
\n" ); document.write( "60.00 + y = 145.00
\n" ); document.write( " y = 145.00 -60.00
\n" ); document.write( " y = 85.00
\n" ); document.write( " y = 85.00
\n" ); document.write( "x= 60 number of adult tickets
\n" ); document.write( "y= 85 number of child tickets
\n" ); document.write( "m.ananth@hotmail.ca
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