Two vessels contain equal quantities of 40% alcohol. Sachin changed the concentr

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Two vessels contain equal quantities of 40% alcohol. Sachin changed the concentration of the first vessel to 50% by adding extra quantity of pure alcohol. Vivek changed the concentration of the second vessel to 50% replacing a certain quantity of the solution with pure alcohol. By what percentage is the quantity of alcohol added by Sachin more/less than that replaced by Vivek ?

Options:

A . $$11\frac{1}{9}$$% less

B . $$11\frac{1}{9}$$% more

C . $$16\frac{2}{3}$$% less

D . $$20$$% more

Answer: Option D

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