NIMCET 2020 Question Paper with solutions

Question : 88 of 120

Marks: +1, -0

If the numerator of a fraction is increased by 25% and denominator decreased by 20%, the new value is 5/4. What is the original value?

Solution:

Let number = x/y

x'=125/100x={5x}/4

y'=80/100y={4y}/5

x'/y'={5 x/4}/{4 y/5}=5/4

x'/y'=x/y=4/5

x/y=4/5

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