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      Question

      In a rectangular floor of length and breadth of 18

      metres and 8 metres, respectively, square tiles each of 3 metre edge length are to be laid. If the cost of each tile is Rs. 140, then find the total cost of the tiles to be laid in the room.
      A Rs. 2240 Correct Answer Incorrect Answer
      B Rs. 2140 Correct Answer Incorrect Answer
      C Rs. 2200 Correct Answer Incorrect Answer
      D Rs. 2230 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Area of the rectangular room = 18 ├Ч 8 = 144 m2 Area of each tile = 3 ├Ч 3 = 9 m2 So, number of tiles to be laid in the room = (144/9) = 16 So, total cost of all the tiles laid in the room = 16 ├Ч 140 = Rs. 2240

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