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    Question

    In a rectangular floor of length and breadth of 21

    metres and 4 metres, respectively, square tiles each of 2 metre edge length are to be laid. If the cost of each tile is Rs. 155, then find the total cost of the tiles to be laid in the room.
    A Rs. 3200 Correct Answer Incorrect Answer
    B Rs. 3455 Correct Answer Incorrect Answer
    C Rs. 3355 Correct Answer Incorrect Answer
    D Rs. 3255 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Area of the rectangular room = 21 × 4 = 84 m2 Area of each tile = 2 × 2 = 4 m2 So, number of tiles to be laid in the room = (84/4) = 21 So, total cost of all the tiles laid in the room = 21 × 155 = Rs. 3255

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