A clock strikes 6 times in 5 seconds. Assuming the strikes are evenly spaced and have no duration themselves, how many seconds will it take to strike 12 times?
11
6 strikes mean there are 5 intervals between them. If 5 intervals take 5 seconds, each interval is 1 second. 12 strikes mean 11 intervals, which takes 11 seconds.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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