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    Question

    Directions (86-90) : In each of the following questions, a question is followed by some statements numbered I, II and III. Read all the statements and answer accordingly.

    Find the rate of interest per annum ? I. The CI

    in 12 years is more than the amount. II. The difference between SI and CI in 3 years is Rs.1200 III. An amount double itself at SI in 20 years
    A Only I and II are sufficient Correct Answer Incorrect Answer
    B Only III is sufficient Correct Answer Incorrect Answer
    C Only II and III are sufficient Correct Answer Incorrect Answer
    D All are not sufficient Correct Answer Incorrect Answer
    E None Correct Answer Incorrect Answer

    Solution

    From III : Principal = P, Amount = 2P Interest = 2P – P = P SI =P = P × R × 20/100 R = 5%

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