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    Question

     If the numerator of a fraction is decreased by 20% and

    the denominator of the same fraction is increased by 30%, then what fraction of the old is the new fraction ?
    A 3/2 Correct Answer Incorrect Answer
    B 6/13 Correct Answer Incorrect Answer
    C 8/13 Correct Answer Incorrect Answer
    D 2/3 Correct Answer Incorrect Answer

    Solution

    Solution -let the fraction = x/y

    Decrease by 20% in numerator and increase by 30% in denominator.

    =(x×80/100)/(y×130/100)

    =8x/13y

    fraction of the old is the new fraction=(8x/13y) ×y/x

    =8/13.

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