If the numerator of a fraction is decreased by 20% and its denominatior is increased by 10% :

If the numerator of a fraction is decreased by 20% and its denominatior is increased by 10%, then fraction will be 16/25. The fraction is
(a) 2/5
(b) 5/2
(c) 3/5
(d) 5/3

Anurag Mishra Professor Asked on 3rd February 2016 in Maths.
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1 Answer(s)

Answer:  (a) 2/5 

Solution:-
Let the fraction be X/Y.

If the numerator of a fraction is decreased by 20% and its denominator is increased by 10%, then fraction will be 16/25. 
Then,  (80 X/100)/(110 Y/100) = 16/25
80 X/110 Y = 16/25
8 X/11 Y = 16/25
X/Y = 16 x 11/25 x 8

Anurag Mishra Professor Answered on 3rd February 2016.
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