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17 August, 01:49

At the movie theatre, child admission is $6.00 and adult admission is $9.90. On Saturday, 155 tickets were sold for a total sales of $1312.20. How many child tickets were sold that day?

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  1. 17 August, 02:09
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    57 children tickets were sold on Saturday.

    You could set this up as a system of equations.

    x + y = 155

    6.00x + 9.90y = 1312.20

    First step is multiplying the first equation by - 6 to use the elimination method.

    -6.00x + - 6.00y = - 930

    6.00x + 9.90y = 1312.20

    The positive and negative 6x cancel out until you are only left with the y.

    Combining them would make your equation ...

    3.9y = 382.2

    Next you would divide by 3.9 on both sides to get the y by itself.

    The result of that would be y = 98. Which means 98 adult tickets were sold. Then you would plug y into either of the equations to solve for x.
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