Question

    What will be the ratio of simple interest earned on

    certain amount at the same rate of interest for 3 years and that for 9 years?
    A 1:3 Correct Answer Incorrect Answer
    B 3:4 Correct Answer Incorrect Answer
    C 2:5 Correct Answer Incorrect Answer
    D 3:7 Correct Answer Incorrect Answer

    Solution

    Let the principal be P and rate of interest be R%. Required ratio = [(P×R×3)/100)]/[(P×R×9)/100)] = 3PR/9PR = 1:3

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