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You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow. If you are 5 feet tall how tall is the building?

  • math -

    Cross multiply and solve for x.

    x/6 = 5/1.25

  • math -

    use ratio, remember to have same units

    let the height of building be h ft
    h/6 = 60/15
    h = 6(60/15) = 24

    the building is 24 ft high

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