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    Question

    In a rectangular floor of length and breadth of 15

    metres and 9 metres, respectively, square tiles each of 3 metre edge length are to be laid. If the cost of each tile is Rs. 160, then find the total cost of the tiles to be laid in the room.
    A Rs. 2500 Correct Answer Incorrect Answer
    B Rs. 2600 Correct Answer Incorrect Answer
    C Rs. 2700 Correct Answer Incorrect Answer
    D Rs. 2400 Correct Answer Incorrect Answer

    Solution

    Area of the rectangular room = 15 ├Ч 9 = 135 m2 Area of each tile = 3 ├Ч 3 = 9 m2 So, number of tiles to be laid in the room = (135/9) = 15 So, total cost of all the tiles laid in the room = 15 ├Ч 160 = Rs. 2400

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