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QUESTION
A certain drug is diluted by the human body in such a way that the concentration level falls at a rate proportional to the existing level.
A certain drug is diluted by the human body in such a way that the concentration level falls at a rate proportional to the existing level. It is found that 50% of the original drug content of a particular organ is gone after 10 hours. How much longer will it take before 90% of the original content has been eliminated?
