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finite math

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what is the cost to install new carpet in an 15' by 21' room if the price of the carpet including installation is $14.50 a square yard?

  • finite math - ,

    Just figure the area of the room:
    area = 15'*21' = 315 ft^2
    one yd^2 = (3ft)^2 = 9 ft^2
    so, area = 315/9 yd^2 = 35 yd^2

    now you can take the last step:

    cost = 35 yd^2 * $14.50/yd^2 = $507.50

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