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    Question

    A certain amount earns simple interest of Rs. 1420 after

    4 years. Had the interest been 5% more, how much more interest would it have earned?
    A Rs. 128 Correct Answer Incorrect Answer
    B Rs. 100 Correct Answer Incorrect Answer
    C Cannot be determined Correct Answer Incorrect Answer
    D Rs. 136 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    When we solve this question, we find that we have two variables P (Principal) and R (Initial assumed rate of interest) in the R.H.S. of the SI equation. Therefore, the correct answer can't be determined.

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