Every 30 Minutes
Riddle: Angela had a disease that required her to take pills. One day, her doctor prescribed her three pills that would help to cure her of her disease. She needed to take one pill every 30 minutes. How much time will pass before Angela takes all of the pills?
Answer: One hour will pass. Once Angela takes the first pill, she'll wait 30 minutes. After that, she will take the second pill and wait another 30 minutes. And then she will take the last pill after that. After all, the first pill doesn't take 30 minutes to take.
Source: https://www.riddles.com/11442
