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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. 156, then find the total cost of the tiles to be laid in the room.
      A Rs. 2300 Correct Answer Incorrect Answer
      B Rs. 2740 Correct Answer Incorrect Answer
      C Rs. 2340 Correct Answer Incorrect Answer
      D Rs. 2390 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Area of the rectangular room = 15 Ă— 9 = 135 m2 Area of each tile = 3 Ă— 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 Ă— 156 = Rs. 2340

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