Question

If i drink 160mg of caffeine and the half-life of caffeine in my body is 7 hours, how much caffeine is left in my body after 7 hours

a) 160mg
b) 80mg
c) 40mg
d) 20mg

Answer 1

After 7 hours, 80mg of caffeine will remain in your body.

Step-by-step explanation:

The half-life of caffeine is 7 hours, which means that after each 7-hour period, the amount of caffeine in your body is reduced by half. Since the initial amount of caffeine you consumed is 160mg, after 7 hours, half of it will remain, which is 80mg. Therefore, the correct answer is option b) 80mg.