Examveda
Examveda

In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10 kg pure ghee is added, then the strength of vanaspati ghee becomes 20%. The original quantity was :

A. 10 kg

B. 15 kg

C. 20 kg

D. 25 kg

Answer: Option A

Solution(By Examveda Team)

Let the original quantity be x kg.
Vanaspati ghee in x kg
$$\eqalign{ & = \left( {\frac{{40}}{{100}}x} \right){\text{kg}} \cr & = \left( {\frac{{2x}}{5}} \right){\text{kg}} \cr} $$
Now,
$$\eqalign{ & \Rightarrow \frac{{\frac{{2x}}{5}}}{{x + 10}} = \frac{{20}}{{100}} \cr & \Rightarrow \frac{{2x}}{{5x + 50}} = \frac{1}{5} \cr & \Rightarrow 5x = 50 \cr & \Rightarrow x = 10 \cr} $$

This Question Belongs to Arithmetic Ability >> Percentage

Join The Discussion

Related Questions on Percentage