FNGR 1 | Lesson 2 | Practice (Half-Life)

Task:

Caffeine takes a certain amount of time to work through your system. One study some years ago showed that the half-life of caffeine in healthy adults is 5.7 hours (see source: Half Life of Caffeine). This means if you consume 200 mg of caffeine at mid-day, you would still have 100 mg in you at around 5:45 pm.

a) One fluid ounce of espresso has 64 mg of caffeine. If Daniel drank an espresso at 8:00 am, when will he have 32 mg of caffeine? How many mg of caffeine will he have at noon? How many mg of caffeine will he have at 8:00 pm?  How many mg of caffeine will he have at 2 am the next morning?

b) Find an algebraic equation for the amount of caffeine in your system at any given time.

The Half Life of Caffeine


Check your solutions.

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