Science task 234: Before finalising a training brief, a curriculum moderation team examines this version. An overseas-trained pharmacist is applying pharmaceutical science to a safe medicines-use decision. A medicine has a half-life of 9 h. What percentage remains after three half-lives?

Science task 234: Before finalising a training brief, a curriculum moderation team examines this version. An overseas-trained pharmacist is applying pharmaceutical science to a safe medicines-use decision. A medicine has a half-life of 9 h. What percentage remains after three half-lives?

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