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    Question

    The difference between compound interest and simple

    interest at the same rate for Rs. 3600 for 2 years is Rs. 144. The rate of interest per annum is:
    A 25% Correct Answer Incorrect Answer
    B 10% Correct Answer Incorrect Answer
    C 30% Correct Answer Incorrect Answer
    D 20% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    When difference is given between SI and CI for 2 years, then the formula is: CI – SI = P (R/100)2 According to the question, => 144 = 3600 (R/100)2 => R2= (144 × 10000)/3600 => R = 20%

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