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    Question

    A rectangular ground is fenced at a cost of Rs. 2880 at

    the rate of Rs. 6 per metre. If the ratio of its length to breadth is 3:2, find the length of the ground.
    A 144 m Correct Answer Incorrect Answer
    B 120 m Correct Answer Incorrect Answer
    C 166 m Correct Answer Incorrect Answer
    D 172 m Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Perimeter of the ground = (2880 ÷ 6) = 480 metres Let the length and breadth of the ground be 3x metres and 2x metres respectively ATP, 2(3x + 2x) = 10x 10x = 480 x = 48 Length of the rectangle = 3 × 48 = 144 metres

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