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    Question

    Investing Rs. (4z + 400) at 20% p.a. compound interest

    for 3 years yields an interest of Rs. (5z - 800). Find the value of ‘z’.(Can calculate approximate value )
    A 250 Correct Answer Incorrect Answer
    B 523 Correct Answer Incorrect Answer
    C 365 Correct Answer Incorrect Answer
    D 120 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    or  Z = 523

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