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math

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a model of a house is drawn using a scale of 3in=15ft. what is the length of the actual house if the model has a length of 15in

  • math -

    Cross multiply and solve for x

    3/15 = 15/x

  • math -

    so is it x=225in

  • math -

    No.

    Cross multiply:

    15 * 15 = 3x

    225 = 3x

    75 = x

    The actual house is 75 feet long.

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