Question

A half-life is the amount of time it takes for a substance or entity to fall to half its original value. Caffeine has a half-life of about 6 hours in humans. Given caffeine amount (in mg) as input, output the caffeine level after 6, 12, and 18 hours.

Answer 1

Explanation:

if the original mass is let's say an unknown mass of x milli grams...by half life period it will have reduced by half which will be

$\frac{x}{2} milli \: grams$

so as the next 6 hours go by to make 12 hours the remaining mass will have reduced again by a half

$\frac{x}{4} milli \: grams$

this continues for the next 6 hours to make 18 hours

$\frac{x}{8} milli \: grams$

I hope this is helpful