Question

a fraction becomes 4 by 5 when 5
is added to its numerator and one is subtracted from its denominator it become 1 by 2 when 3 and 5 are subtracted from its numerator and denominator the numerator of a fraction will be

Answer 1

$\frac{x + 5}{y - 1} = \frac{4}{5}$
$\frac{x - 3}{y - 5} = \frac{1}{2}$

Answer 2

hey friend!!!!
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Let the fraction be p/q
give that the fraction will become 4/5 if 1 is added to numerator and denominator
so

4/5 =(p+1)/(q+1)

4q+4 = 5p+5

and

(p-5)/(q-5)=1/2

2p-10=q-5

q= 2p-5

SO

4(2p-5) +4 =5p+5

8p-20+4 = 5p+5


3p= 21

p=7

Therefore q=2*7-5

q=9

So the fraction is 7/9

hope it will help you..