A vessel contained a solution of acid and water, in which water was 64%. Four litres of the solution was taken out of the vessel and the same quantity of water was added. If the resulting solution contains 30% acid, the quantity (in litres) of the water in the solution, at the beginning in the vessel, was:
A. 8.64
B. 15.36
C. 12.64
D. 11.36
Answer: Option B
This Question Belongs to Arithmetic Ability >> Alligation
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