Dwight was told by his mystic guru that a special medicine would help him gain superhuman strength to fight bears. The instructions say “Take 2 drops per 10 pounds of body weight per day, in 4 doses a day.” Dwight weighs 180 lbs. There are approximately 20 drops in 1 mL. How many liters of the medicine should Dwight buy to have a supply for the next 5 years?

Explanation:

1 dose = 2 drops * 180 / 10 = 36 drops /dose

4 doses = 4 * 36 = 144 drops / day.

144 drops * 365 = 52560 drops / year

52560 * 5 = 262800 drops / 5 years.

262800 / 20 = 13140 mL

13140 ml / 1000 = 13.140 L  for a 5 year supply.

We are still not quite finished. There must be at least 1 leap year and maybe 2.

1 leap year would add 0.144 Liters

2 leap years would add 0.288 liters

I'm not sure how to finish the problem. I am going to say that we should ignore the leap years and stick with the answer. 13.140 L for 5 years.

Interesting question.