Question

एक भिन्न का अंश 250% बढ़ा दिया जाए और हर भी 300% बढ़ा दिया जाए तो वह भिन्न 7/19हो जाएगी तो मूल भिन्न क्या थी ?
(अ) 8/19
(ब) 5/19
(स) 9/5
(द) 19/5

plz step by step solve this question​

Answer 1

let x/y be fraction

(250%of x+x)/(300%of y+y)=7/19

(350/100)x/(400/100)y=7/19

3.5x/4y=7/19

x=2k

y=19/4k

if k is constant

k=4

so x=8

y=19

fraction

8/19..

Answer 2

The correct option is A.

Step-by-step explanation:

Let the actual fraction is x/y.

It is given that if numerator increased by 250% and denominator increased by 300%, then the new fraction is 7/19.

$\dfrac{x+250\% of x}{y+300\%of y}=\dfrac{7}{19}$

$\dfrac{x+2.5x}{y+3y}=\dfrac{7}{19}$

$\dfrac{3.5x}{4y}=\dfrac{7}{19}$

Isolate variable terms of left side.

$\dfrac{3.5x}{4y}\times \dfrac{4}{3.5}=\dfrac{7}{19}\times \dfrac{4}{3.5}$

$\dfrac{x}{y}=\dfrac{8}{19}$

The actual fraction is 8/19.

Therefore, the correct option is A.

#Learn more

The numerator of fraction is 1 less than its denominator if the numerator is increased by 4 and the denominator is increased by 5 the new fraction become equivalent to 4/5 what is the original fraction.

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