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Discussion :: Simple Interest

  1. A certain sum becomes four times itself at simple interest in eight years. In how many years does it become ten times itself?
  2. A.
    21
    B.
    25
    C.
    23
    D.
    27
    E.
    None of these

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    Workspace

    Answer : Option E

    Explanation :

    Let the sum be Rs. x, then it becomes Rs. 4x in eight years Rs. 3x is the interest on x for eight years.

    R = (100 * 3x)/(x * 8) = 300/8 %


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