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    Question

    An amount doubles itself on simple interest in 4 years.

    What is the percent per annum rate of interest?
    A 50% Correct Answer Incorrect Answer
    B 25% Correct Answer Incorrect Answer
    C 12.5% Correct Answer Incorrect Answer
    D 100% Correct Answer Incorrect Answer

    Solution

    4 years =2 times 4 years =2 times -1 4 years =1 Rate of interest =1/4) ×100 =25%

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