A clock loses 2 minutes every single hour. If you set it to the correct time right now, how long will it take for the clock to be exactly one hour behind?
30 hours
The clock loses 2 minutes per hour. To be 1 hour (60 minutes) behind, you need 60 minutes of lost time. Dividing 60 by 2 gives 30 hours.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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