An antique clock chimes 5 times in 4 seconds. Assuming the chimes are evenly spaced, how many seconds will it take for the clock to chime 10 times?
9 seconds
5 chimes have 4 intervals between them, meaning each interval is 4 / 4 = 1 second. 10 chimes have 9 intervals, which takes 9 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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