Arithmetic Ability
Percentage

131 / 161

Q.

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

View Answer

Correct choice: A

Explanation:

Let the original quantity be x kg. Vanaspati ghee in x kg = (40x / 100 )kg = (2x / 5) kg. Now, (2x/5)/(x + 10) = 20/100 => 2x / (5x + 50) = 1/5 => 5x = 50 => x = 10.
131 / 161