In a machine, a large gear completes a revolution every minute while a small gear completes a revolution every 24 seconds. If the gears are currently aligned, how much time will pass before they are aligned again?
This question is asking you for the least common multiple of 60 (seconds in 1 minute) and 24 (seconds in 24 seconds). I think it's 120 (you should check it) and that would be 3 minutes.
