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rosie25 | 13:10 Wed 26th Mar 2014 | Quizzes & Puzzles
9 Answers
Please can anybody help me solve this puzzle;
The doctor has prescribed some medication. You must take 1 pill every 20 minutes for the first hour. Then at the beginning of the second hour 2 pills every half hour. Given that the container holds 20 pills in total you must follow doctors orders.
How long will the treatment last.
How many pills will be left over ?

Many thanks in advance.
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assuming the first pill is taken at minute zero, then the treatment lasts 5 hours, because by then there would only be 1 pill left to take
5 hours + 1 left over (3+4+4+4+4)
Question Author
Thank you and that is what i thought but evidently that is not correct ??
could be argued that the treatment stopped at 4.5 hours, as that was when the last sets of 2 pills could be taken. Do you know what the correct answer is?
5 ate 15 left waste id say
Question Author
Ok i have just tried that one, 270 minutes and 3 pills left but evidently that is incorrect too.
sorry, meaning it would be 4.5 hours of treatment with 1 pill left
Question Author
Thanks i will try that when it lets me have another go and let you know.
Question Author
Thank you that was the correct answer 1 pill and 4.5 hours.

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