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24 October, 02:03

In the first 3 hours of a concert, 2,100 people passed through the gates. How long will it take to fill a concert hall that has 2,800 seats?

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Answers (2)
  1. 24 October, 03:24
    0
    It would take 4 hours to fill a concert hall that has 2,800 seats because it takes 3 hours for 2,100 people to fill and 2,100/3=700 so 700*4=2,800.
  2. 24 October, 03:46
    0
    Here, we need to set up a proportion.

    3/2100 = x/2800

    Cross multiply.

    3*2800 = 8400

    2100*x = 2100x

    2100x = 8400

    2100x/2100 = 8400/2100

    x = 8400/2100

    x = 4

    Final answer: It will take 4 hours to fill 2800 seats
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