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    Question

    In a rectangular floor of length and breadth of 21

    metres and 6 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the cost of each tile is Rs. 150, then find the total cost of the tiles to be laid in the room.
    A Rs. 4700 Correct Answer Incorrect Answer
    B Rs. 4735 Correct Answer Incorrect Answer
    C Rs. 4775 Correct Answer Incorrect Answer
    D Rs. 4725 Correct Answer Incorrect Answer

    Solution

    Area of the rectangular room = 21 × 6 = 126 m2 Area of each tile = 2 × 2 = 4 m2 So, number of tiles to be laid in the room = (126/4) = 31.5 So, total cost of all the tiles laid in the room = 31.5 × 150 = Rs. 4725

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