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30 October, 13:33

It cost $35 for one adult and two children to attend a show. It cost $60 for two adults and three children to attend the same show. How much does it cost one adult to attend the show?

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  1. 30 October, 15:56
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    Assume that,

    adult = x

    child = y

    x+2y = 35 (1st equation)

    2x+3y = 60 (2nd equation)

    x = 35-2y (3rd equation)

    Substitute 3 into 2:

    2 (35-2y) + 3y = 60

    70-4y + 3y = 60

    y = 10

    x+2y = 35

    x+2 (10) = 35

    x + 20 = 35

    x = 15

    One adult = $15
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