document.write( "Question 272479: At the movie theatre, child admission is 5.30 an adult admission is 9.10. On Monday, 159 tickets were sold for a total sales of 1120.10, how many adult tickets were sold that day? \n" ); document.write( "
Algebra.Com's Answer #199331 by dabanfield(803)\"\" \"About 
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At the movie theatre, child admission is 5.30 an adult admission is 9.10. On Monday, 159 tickets were sold for a total sales of 1120.10, how many adult tickets were sold that day?\r
\n" ); document.write( "\n" ); document.write( "Let a be the number of adult tickets and c the number of children's tickets. Then we have:\r
\n" ); document.write( "\n" ); document.write( "1.) a + c = 159
\n" ); document.write( "2.) 9.10*a + 5.30*c = 1120.10\r
\n" ); document.write( "\n" ); document.write( "From 1.) we have a = 159 - c.\r
\n" ); document.write( "\n" ); document.write( "Substitute 159 - c for a in equation 2.)and solve for c:\r
\n" ); document.write( "\n" ); document.write( "9.10*(159-c) + 5.30*c = 1120.10\r
\n" ); document.write( "\n" ); document.write( "Once the value for c is determined then a = 159 - c.
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