The amount of caffeine that was taken each hour will be 7.71 milligrams
How to compute the value?
From the information given, it was stated that after three hours, there are 16.875 milligrams left. The factor to show the decrease in the first hour will be:
= (40 - 16.875)/3
= 7.71
This shows that 7.71 milligrams was taken each hour.
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