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A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup , How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup , How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup? Correct Answer 1/5

Initial ratio = 3 : 5 Target ratio = 4 : 4 ∴ Part of replacement = 5 - 45 = 15 

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