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    Question

    What is the minimum number of square marbles required to

    tile a floor of length 4 metres 35cm and width 3 metres 60 cm?  
    A 696 Correct Answer Incorrect Answer
    B 589 Correct Answer Incorrect Answer
    C 678 Correct Answer Incorrect Answer
    D 596 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 435cm & 360cm = HCF (435,360) = 15cm . So area of 1 square tile = 15cm ×15cm & Area of the floor = 435cm×360cm.                                                                  So number of tiles = Area of floor/ area of 1 tile = (435cm×360cm)/(15cm ×15cm) = 29 × 24 = 696.

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