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24 November, 21:34

A theater charges $9 for an adult ticket and $4 for a child ticket.

All 1020 tickets were sold and $7680 of revenue was brought in.

How many adult tickets were sold?

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Answers (2)
  1. 24 November, 21:38
    0
    720 adult tickets were sold and 300 kid tickets were sold
  2. 24 November, 21:59
    0
    X - number of adult tickets

    y - number of child tickets

    9x + 4y = 7680

    x + y = 1020

    y = 1020 - x

    9x + 4 (1020 - x) = 7680

    9x + 4080 - 4x = 7680

    9x - 4x = 7680 - 4080

    5x = 3600

    x = 3600/5

    x = 720

    720 adult tickets were sold.
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