Multiple choice general knowledge math & puzzles

If a doctor gave you three pills and told you to take one every 30 minutes, how long would they last you?

  1. 60 minutes

  2. 90 mintues

  3. 120 minutes

  4. 150 minutes

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

You take the first pill at 0 minutes, the second at 30 minutes, and the third at 60 minutes. Therefore, the total time elapsed from the first to the last pill is 60 minutes. 90 minutes is a common distractor assuming 3 intervals of 30.