1)

If the numerator of a fraction is increased by 140% and the denominator is increased by 150% ,the resultant fraction is 4/15.What is the original fraction?


A) 3/5

B) 5/18

C) 4/18

D) 3/10

E) 3/12

Answer:

Option B

Explanation:

Let the required fraction be $\frac{x}{y}$

Resultant fraction = $\frac{x+\left(x \times \frac{140}{100}\right)}{100} \div \frac{y+\left(y \times \frac{150}{100}\right)}{100}$

$=\frac{4}{15}$

$\frac{x}{y} = \left(\frac{4}{15}\right)\times \left(\frac{25}{24}\right)$

$= \frac{5}{18}$