In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10kg of pure ghee is added, then the strength of vanaspati ghee becomes 20%. The original quantity was?
Choose the correct choice from the following answers.
A) 10
B) 15
C) 20
D) 18
E) 22
Let the original quantity be x   then, vanaspati ghee in xkg = 40x/100 kg= 2x/5kg   (2x/5)/(x+10) = 20/100   2x/(5x+50) = 1/5   x = 10   10nswer is 10
<result>A</result>
In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10kg of pure ghee is added, then the strength of vanaspati ghee becomes 20%. The original quantity was?