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22 July, 04:05

At the movie theatre, child admission is $5.40 and adult admission is $9.20. on thursday, twice as many adult tickets as child tickets were sold, for a total sales of $785.40. how many child tickets were sold that day

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  1. 22 July, 04:06
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    33 child tickets were sold that day.

    adult tickets = a

    child tickets = c

    9.2a + 5.4c = 785.4

    a = 2c

    Substitute a into the first equation

    9.2 (2c) + 5.4c = 785.4

    Simplify

    18.4c + 5.4c = 785.4

    Combine like terms by adding

    23.8c = 785.4

    Divide both sides by 23.8 to isolate the variable c

    c = 33
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