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math

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Please show me how to work this problem:

Fran makes a rectangular tablecloth that has an area of 5 ft squared. Her mother makes a tablecloth that is three times the length and three times the width of Fran's. What is the area, in square feet, of her mother's tablecloth?

  • math - ,

    Think about it.

    the current dimensions are x and y and xy=5

    The new dimensions are 3x and 3y and the area is (3x)(3y) = 9xy = 9(xy) = 9 times the original area.

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