There are two vessels V1 and V2, both containing Benzene solution of 40% concentration. Marie Curie added some pure Benzene to V1 to bring the concentration to 50%. In the vessel V2, Marie Curie took out some quantity of the solution and replaced it with an equal quantity of pure Benzene, to bring the concentration to 50%. What is the ratio of the amount of Benzene added in V1 and V2, if the quantity of initial solutions in V1 and V2 are in the ratio of 1 : 2?

There are two vessels V1 and V2, both containing Benzene solution of 4

1.	There are two vessels V1 and V2, both containing Benzene solution of 40% concentration. Marie Curie added some pure Benzene to V1 to bring the concentration to 50%. In the vessel V2, Marie Curie took out some quantity of the solution and replaced it with an equal quantity of pure Benzene, to bring the concentration to 50%. What is the ratio of the amount of Benzene added in V1 and V2, if the quantity of initial solutions in V1 and V2 are in the ratio of 1 : 2?
A.	8 : 3
B.	3 : 5
C.	1 : 5
D.	4 : 3
E.	None of these
Answer» C. 1 : 5

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