Brain Teasers
New Watch
I need to get a new watch. The one I have loses exactly 20 minutes every hour. It now shows 4:00am and I know that it was correct at midnight, when I last set it. I happen to know that the watch stopped 4 hours ago, so what is the correct time now?
Answer
10:00am.Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments
Great Teaser!
Every 3 hours the watch loses an hour so it only gains 2 hours. Thus at 60 am it showed 40 am which is when it stopped. That was 4 hours ago so it is now 10 am. Simple.
To post a comment, please create an account and sign in.
Follow Braingle!