If the difference between the reciprocal of a positive proper fraction and the f

Question

If the difference between the reciprocal of a positive proper fraction and the fraction itself be $9/20$ , then the fraction is

Options:

A . $5/4$

B . $4/5$

C . $3/10$

D . $3/5$

Answer: Option B
Answer: (b)The required fraction is $4/5$, because $5/4$ – $4/5$=${25 - 16}/20 = 9/20$

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