UPTET Feb 2016,p1; Q113

0. If the numerator of a fraction is decreased by 20% and its denominator is increased by 10%, then fraction will be 16/55. The fraction is

Answer
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Option : A
Explanation : Let the proper fraction is x/y.
Then (x - 20% of x)/(y + 10% of y)= 16/55.
⇒ (80 X x)/(110 X y) = 16/55.
⇒ x/y = 16/55 X 110/80 = 2/5.

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