document.write( "Question 1082237: At the city museum, child admission is $5.30 and adult admission is $9.00. On Saturday, 136 tickets were sold for a total sales of $913.20. How many child tickets were sold that day? \n" ); document.write( "

Algebra.Com's Answer #696297 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Your equations are\r\n" );
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document.write( "     c +      a = 136,       (1)\r\n" );
document.write( "5.30*c + 9.00*a = 913.20.    (2)\r\n" );
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document.write( "From equation (1), express a = 136 - c and substitute it into equation (2) replacing  \"a\". You will get a single equation for \"c\":\r\n" );
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document.write( "5.30*c + 9*(136-c) = 913.20.\r\n" );
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document.write( "Simplify and solve for \"c\", the number of children's tickets.\r\n" );
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\n" ); document.write( "\n" ); document.write( "This method is called \"the Substitution method\".\r
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