A clock chimes 5 times in 4 seconds. Assuming the chimes take zero duration and are spaced evenly apart, how many seconds will it take for the same clock to chime 10 times?
9 seconds.
5 chimes create 4 intervals between them. 4 seconds for 4 intervals means each interval is 1 second. 10 chimes create 9 intervals, which takes 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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