A clock chimes 5 times in 4 seconds. Assuming the chimes are evenly spaced and take zero duration themselves, how many seconds will it take for the same clock to chime 10 times?
9 seconds
5 chimes mean there are 4 intervals between chimes. 4 seconds for 4 intervals means each interval is 1 second. 10 chimes mean there are 9 intervals. 9 intervals * 1 second = 9 seconds.
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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