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A building casts a 20 ft shadow. At the same time, a nearby 10 ft maple tree casts a shadow of 8 ft. What is the height of the building?

  • math -

    same thing as below.

    10/8 = x/20

    5/4 = x/20

    4x = 100

    x=25

    Plugging in, 25/ 20 = 10 /8

    = 5/4 = 5/4

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