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    Question

    What is the minimum number of square marbles required to

    tile a floor of length 2 metres 8cm and width 2 metres 86 cm?  
    A 100 Correct Answer Incorrect Answer
    B 88 Correct Answer Incorrect Answer
    C 76 Correct Answer Incorrect Answer
    D 98 Correct Answer Incorrect Answer

    Solution

    If there is a requirement of minimum number of tiles , we must take the maximum size of the side. The side of square tile required to tile a floor of length 208cm & 286cm =HCF (208,286) = 26cm . So area of 1 square tile = 26cm ×26cm & Area of the floor = 208cm×286cm.                                                                  So number of tiles = Area of floor/ area of 1 tile = (208cm×286cm)/(26cm ×26cm) = 8 ×11 =88.

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