An empty bottle weighs 1/6th of the full bottle. When a certain percent of water was removed and the bottle was weighed, the weight of the bottle turned out to be 1/3rd of the bottle when it was full. What is the percent of water removed? Choose the correct choice
A) 89% B) 82% C) 81% D) 50% E) 80%
Explanation:   Let the weight of full bottle be 6kg.   Therefore, weight of empty bottle is 1kg and that of water is 5kg.   If x% of water is removed, the weight of the bottle becomes 2kg.   Therefore, the amount of water removed is 4kg.   % of water removed = 4/5 *100= 
<gadget id="calculator">4/5 *100</gadget>
<output>80</output>
80%   ANSW80%R: 80%
<result>E</result>
An empty bottle weighs 1/6th of the full bottle. When a certain percent of water was removed and the bottle was weighed, the weight of the bottle turned out to be 1/3rd of the bottle when it was full. What is the percent of water removed?